bushmaster acr owners manual - combat rifle
TRANSCRIPT
Bushmaster® aCr® Operating and safety manual
™
TABLE OF CONTENTS
PAGE1 Warnings/Cautions/SafeHandling2 DangerousProcedures3 AboutYourBushmasterFirearm4-5 FirearmFeatures&Controls–
Identification/Location
6 ClearingYourFirearm7 PreventativeMaintenanceChecks8 SafetyFunctionCheck9 PreparingtoFire/LoadingaMagazine10 OperationofYourFirearm/Loading10 Operation/InsertingaMagazine11 Operation/ChamberingfromOpenBolt12-13 Operation/ChamberingfromClosedBolt14 Operation/StockAdjustments15 ImmediateActions-InCaseofTrouble16 RemedialActions17 BulletStuckintheBore18 BackUpSights
PAGE19 ZeroingYourSights19 25MeterZeroingProcedures20 Front&RearSightAdjustment21-25 DisassemblingYourFirearm26 Inspection/Cleaning/Lubrication27-28 DetailedCleaningTechniques29 CleaningtheUpperReceiver29 CleaningtheBolt&Carrier30 Cleaning/LubricatingtheEjector31 CleaningtheLowerReceiver31-35 ReassemblingYourFirearm36-37 MagazineDisassembly/Reassembly38-42 Re-ConfiguringFirearm43-47 Problems/Solutions48 MaintenanceinExtremeWeather49 PartsandAccessories50-51 ComponentVariations52-54 Warranty
P.O. Box 1479 • 999 Roosevelt Trail • Windham, Maine 04062 U.S.A.Sales: 1 800 998 7928 • Customer Service: 1 800 883 6229 • Tel. 207 892 3594 • Fax: 1 207 892 8068http://www.bushmaster.com • E-mail: [email protected]
PLEASE PRACTICE SAFE FIREARMS HANDLING!
WARNING:IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED,UNINTENTIONAL DISCHARGE COULD RESULT AND COULD CAUSE INJURY, DEATH, OR DAMAGE TO PROPERTY.
CAUTION:CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRING THIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING AND SAFE USE OF THIS FIREARM - LIVES MAY DEPEND ON IT!
CAUTION:USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTURED AMMUNITION IN GOOD CONDITION which is appropriate to the 5.56mm NATO/223 Remington or 6.8mm Remington SPC caliber of your Firearm. Bushmaster does not recommend the use of remanufactured or hand loaded ammunition because it may damage your rifle and/or cause your firearm to malfunction.
WARNING:THIS FIREARM COULD CHAMBER A ROUND if it is dropped or jarred with a loaded magazine in place - either with the Bolt Carrier Assembly locked to the rear, or in its forward position.
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FUNDAMENTAL RULES FOR SAFE GUN HANDLING
• ALWAYS KEEP THE FIREARM POINTED IN A SAFE DIRECTION.
• NEVER LOAD THE FIREARM UNTIL READY TO USE.
• KEEP YOUR FINGER OFF THE TRIGGER UNTIL READY TO SHOOT.
WARNING: BEWARE OF DANGEROUS PROCEDURES
•BesureCamPinisinstalledintheBoltGroup.Ifitisn’t,yourFirearmcanstillfireandCOULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
•WhenusingaBlank Firing Attachment, NEVER FIRE ANYTHING EXCEPT BLANKS!Foryoursafety,werecommendthevisible,militarystyleblankfiringattachment(BFIPart#RAY-008).
•Ifyourfirearmstopsfiringwithaliveroundinthechamberofahotbarrel(amisfire),REMOVE THE ROUND FAST! However,ifyoucannotremoveitwithin10seconds,removemagazineandwait15minuteswith the Firearm pointing in a SAFE DIRECTION! Thiswayyouwon’tbehurtbyapossibleround“cooking-off”(i.e.therounddetonatingjustfromtheheatofthebarrel).Keepyourfaceawayfromtheejectionportwhileclearingahotchamber.
•Ifyourboltfailstounlock,andyoutrytofreeitbytappingthebuttstockonthegroundwhilepullingonthecharginghandle,keep yourself clear of the Muzzle and the Firearm pointed down range.
•Ifthereiswaterinthebarrel,donotfiretherifle.IT COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
•Pullthecharginghandletothereartobreakthesealtoensurethewaterwillrunofffromthechamberthroughtheejectionportarea.
•Ifanoticeabledifferenceinsoundorrecoilisexperienced,STOP FIRING! Eitherconditioncouldindicateanincompletepowderburnand/orabulletorotherobstructionstuckinthebore.
•TaketheFirearmtoaqualifiedgunsmithandhaveobstructionsremoved.•NOTE: WiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition,iftheFirearmis
droppedorjarredwithaloadedmagazineinplace,aliveroundcouldbechambered.
2ALWAYS PRACTICE SAFE FIREARMS HANDLING!
ABOUT YOUR BUSHMASTER RIFLE…
ThisOperatingManualcoverstheBushmaster ACR (“ACR”)whichischamberedin5.56mmNATO/223Remingtonand6.8mmRemingtonSPCammunition.Itisagaspiston,air-cooledshoulderfired,magazine-fedFirearm,thatisSemi-Automaticinoperation(i.e.,asingleroundwillfireeachtimethetriggerispulled).
•TheACRBarrelsarecoldhammerforgedandholdthetightesttoleranceallowed.Theyarerifledwitheithera1turnin7”forheaviergrainweightbulletsor1turnin9”forlighterbulletswitharighthandtwist–6landsandgrooves.
•TheACRisoperatedbyaregulated,short-strokeGasPistonSystemwhicheliminateshotgasfrombeingin-troducedintotheUpperandLowerReceivers.TheRegulatorcanbesetforUnsuppressedorSuppressedfire.
•TheACRisamulti-caliberplatformandiscapableoftransitioningtoarangeofcaliberssimplybyswappingtheBarrelAssemblyandBolt,usingtheappropriateMagazine.SomecalibersmayrequireanalternatelowertoacceptdifferentsizedMagazines.
•AllACRUpperandLowerReceiversareeasilyopenedforcleaningandinspection.
•TheUpperReceiverismadeofextrudedAluminumandtheLowerReceiverismadeofaproprietarycompositepolymer.
•MostACRmodelsfeaturefullyadjustablerearsights/elevationadjustablefrontsights.
•TheBoltGrouplocksintotheBarrelExtensionwith7lockinglugs.
•AllmodelscanbeconfiguredwitheitheraFixedStockor7positionTelescoping/FoldingStock.
•Allmodelsfeatureverticalpistolgripsanddetachablemagazines.Magazinecapacityis30roundsstandard(dependingonStateRegulations),butallAR-15/M-16typemagazinesofcapacitiesfrom5to40roundswillfittheACRandfunctioninit.
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Firearm Features & Controls - Identification/Location…
4
AdjustableCheekPiece
FixedHigh-ImpactCompositeA-FrameStockwithRubberButtpad
MBUSRearFlipSight MBUSFrontFlipSight
GasRegulatorSelector
MonolithicMIL-STD-1913TopRail
BrassDeflector
PistolGrip
BoltCatch/Release
30RoundPMAG
Compensator
MagazineReleaseButton
CompositePolymerHandGuard
Trigger
SafetySelector
Firearm Features & Controls - Identification/Location… (cont’d.)
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M4ProfileBarrel
ChargingHandleTakedownPin
StockReleasePinQuickDetachSlingCoupler QuickDetach
SlingCoupler
HandGuardRetainingPin
MagazineReleaseButton
BoltCatch/Release
SlingLoops
SafetySelectorPivotPin
NOTE: ATF Regulations require a minimum barrel length of 16" oncommerciallyavailableriflesandcarbines.This16"lengthcanbeacombinationofbarrelandpermanentlyfixed(pinned&weldedover)muzzlebrake/flashsuppressoraslongastotallengthequals16".
CLEARING YOUR FIREARM…
ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING. First,assumethefirearmyouarehandlingisloaded,andthenproceed-accordingtothefollowingsteps-toCLEAR YOUR FIREARM . . .
1.PointFirearminaSAFE DIRECTION! PlaceSafetySelectorLeveronSAFE.
NOTE: If the Firearm is not cocked, the Safety Selector Lever cannot be pointed toward SAFE.
2.PressMagazineReleaseButtonandpullMagazinedowntoremove.
3.TolockBoltopen,pullChargingHandlerearward.PressupwardontheBoltCatchandallowBolttomoveforwarduntilitengagestheBoltCatch.Ifyouhaven’tbefore,nowplaceSafetySelectorLeveronSAFE.
SafetySelectorLeveronSAFE.
4.VisuallyandphysicallycheckthattheChamberisclear.
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PREVENTATIVE MAINTENANCE CHECKS & SERVICES…
CHECK BEFORE YOU FIRE!
2.RetracttheBolttoensurefreemovementoftheBoltCarrier.
3.PerformSafetyFunctionCheck(nextpage)toensurethatSafetySelectorLeverworksproperly.
4.EnsuretheGasRegulatorissetto“U”forunsupressedfire;iffiringwithasilencermounted,setGasRegulutorto“S”forsuppressedfire.
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NOTE: GasRegulatormustbesetcorrectlyforeitherunsuppressedorsuppressedfire;IfnotsetcorrectlytheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.
WARNING! NeveroperateFirearmwithGasRegulatorsetinbetweenthe“U”and“S”settings.
ALWAYS FOLLOW THE RULES OF SAFE FIREARM HANDLING.First,assumetheFirearmyouarehandlingisloaded,andthenproceed-accordingtothefollowingsteps-toCLEAR YOUR FIREARM...
1.ChecktoseethatthereisNO EXCESSIVE OIL intheBore.Ifthereis,swabitoutwithapatchandthecleaningrod.ALWAYS CLEAN A NEW FIREARM BEFORE FIRING. WARNING! IftheFirearmisfiredwithoil-orwater-inthebarrel,excessivepressurewillbecreatedandtheFirearmcouldmalfunctioncausingpersonalinjury,propertydamageordeath.
SAFETY FUNCTION CHECK…
UNLOAD FIREARM - REMOVE MAGAZINE - CHECK CHAMBER1.RemoveMagazineifinstalled.PullChargingHandleassemblytorear.CheckthatChamberis
clear.LettheBoltandBoltCarrierclose.DonotpullTrigger.LeaveHammerincockedposition.
WARNING! IfFirearmfailsanyofthefollowingtests,continueduseoftheFirearmcouldcauseamalfunctioncausingpersonalinjury,propertydamageordeath.2.PlaceSelectorLeverinSAFE position,pointrifleinasafedirection,
andpulltheTrigger.THE HAMMER SHOULD NOT FALL.3.PlaceSelectorLeverinFIRE position.PulltheTrigger.
THE HAMMER SHOULD FALL.
NOTE: Forpurposesofthefollowingcheck,“SLOW”isdefinedasonefourthtoonehalfthenormalrateoftriggerrelease.
4.HoldTriggertotherear,pullChargingHandletotherearandreleaseChargingHandle.ThenreleasepressureontheTriggerwithaslow,smoothmotion,withouthesitationsorstops,untiltheTriggerisfullyforward.
AN AUDIBLE CLICK SHOULD BE HEARD - THE HAMMER SHOULD NOT FALL.
5.RepeattheFIREpositiontestFIVE TIMES.TheFirearmmustnotmalfunctionduringanyofthesefivetests.PulltheChargingHandletotherearonelasttimeandreleaseforward.
6.PlacetheSelectorLeverinSAFEposition.PulltheTrigger.THE HAMMER SHOULD NOT FALL.IftheFirearmmalfunctionsduringanyofthesefivetests,havetheFirearmcheckedbyaqualifiedgunsmith.
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PREPARING TO FIRE - LOADING A MAGAZINE…
1.Useonlyquality5.56mm/223RemingtonAmmunitioninyourFirearm(or6.8mmRemingtonSPCifapplicable).ExamineeachCartridge-particularlyaroundtheprimer.Lookfordents,scratches,andothersignsofdamage.
DO NOT LOAD DAMAGED AMMUNITION!
2.WiththeMagazinefacingforward,asshownintheillustration,placeaRoundbetweentheFeedLipsoftheMagazinewiththeBulletTipforward.PushtheRounddownuntilitisheldbytheMagazineFeedLips.
3.Ifnecessary,givetheRoundaslightpushbackwardtoseatitagainsttheinsidebackedgeoftheMagazineFeedLips.PlacenextRoundontopofthepreviousRoundandrepeatstepsuntildesirednumberofRoundsareloadedintoMagazine.
CAUTION! SafeFirearmsHandlingdictatesthatyouONLY LOAD LIVE AMMUNITION INTO YOUR RIFLE WHEN YOU ARE ABOUT TO SHOOT.
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OPERATION OF YOUR FIREARM… LOADING
CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!1.WiththeHammercocked,place
SelectorLeveronSAFE.2.OpenBoltandcheckFiringChamber.
MakesureitisCLEAR!
1.ReturnChargingHandletoforward,lockedposition.PushMagazineupintoMagazineWelluntilMagazineCatchengagesandholdstheMagazine.
2.SlapupwardsonMagazinebottomtomakesureitisseatedcorrectly.
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INSERTING A MAGAZINE…
OPERATION OF YOUR FIREARM… (cont’d.)
CHAMBERING A ROUND FROM AN OPEN BOLT…
NOTE: TheMagazinemaybeinsertedintotheFirearmwiththeBoltAssemblyOpenorClosed.
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2.TAPtheChargingHandleforwardwiththeheelofyourhandtoensurethattheBoltisfullyforwardandlocked.
1.PresstheBoltCatchdownward.Boltshouldspringforward.ThiswillchamberaroundfromtheMagazine.
FIREARM IS NOW READY TO BE AIMED AND FIRED!
OPERATION OF YOUR FIREARM… (cont’d.)
CHAMBERING A ROUND FROM A CLOSED BOLT…1.WithaMagazineintheFirearm,pulltheChargingHandlefullytoRear.Thenreleasethe
ChargingHandle–allowingtheBolttospringforward–chamberingthefirstround.
NEVER “Ride”orpushtheChargingHandleforward.Letitmoveforwardonitsown.
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2.TAPtheChargingHandleforwardtoensurethattheBoltisfullyforwardandlocked.
NOTE: IfFirearmisnotgoingtobefiredimmediately,makesuretheSelectorLeverisstillonSAFE .
FIREARM IS NOW READY TO BE AIMED AND FIRED!
OPERATION OF YOUR FIREARM… (cont’d.)
AimatTarget–PullTrigger–Release.TheFirearmwillautomaticallyejectthespentCartridgeandchamberanotherRoundinpreparationforthenextshot.ThecycleofpullingtheTriggertoshoot,andtheFirearmautomaticallyreloading,canbecontinueduntiltheMagazineisempty.NOTE:AfterthelastRoundisfired,theBoltCarrierwilllockintherearposition.YoucanthenpushtheMagazineReleaseButtontodropouttheemptymagazine,insertafreshMagazine,releasetheBoltCatch,andanewRoundwillbeautomaticallychamberedinpreparationforthenextfiringsequence.WARNING… IF A NOTICEABLE DIFFERENCE IN SOUND OR RECOIL IS EXPERIENCED, STOP FIRING AND IMMEDIATELY CHECK THE FIREARM FOR OBSTRUCTIONS. AN OBSTRUC-TION MAY CAUSE A MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.Eitherconditioncouldindicateanincompletepowderburnand/orabulletstuckinthebore.RetracttheBoltslowlyandremovethefiredcartridgecase.CleartheFirearmandcheckforunburnedpowdergrainsintheReceiverorBore,andforaBulletstuckintheBore(SeePage17).Cleanoutanyunburnedpowderbeforeresumingfiring.IfaBulletisstuckintheBore,donotattempttoremoveit.TaketheFirearmtoaqualifiedGunsmith.
CONDITION: FirearmisnowLoaded,aRoundischambered,andSafetySelectorshouldbeonSAFE.
ToFIREtheFirearminSEMI-AUTOMATIC MODE(oneRoundfiredwitheachpulloftheTrigger),movetheSafetySelectorLeverfromSAFE toFIRE.
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CAUTION: ALWAYS POINT THE MUZZLE IN A SAFE DIRECTION!
OPERATION OF YOUR FIREARM… (cont’d.)
STOCK ADJUSTMENTS1.ToadjusttheCheekPieceheight,slidetheCheekPiecerearwardtounlock.
2.LiftCheekPiecetotheelevatedposition.
3.SlideCheekPieceforwardtolockintoplace.
4.ReverseactioninordertoreturnCheekPiecetothelowerposition.
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OPTIONAL – FOLDING/TELESCOPING STOCK1.Toadjustthelengthofpull,depressboth(leftandright)
StockExtensionButtonsandslidestockforwardorback.
2.Tofold,depresstheStockReleaseLatchandfoldtheStockforwardontherighthandside.
3.ToreturntheStock,pulltotherearuntiltheStocklocksintoplace.
NOTE: Stockisheldopenbydetentbutdoesnotlockopen.NOTE: TheFirearmcanbefiredwiththestockinthefoldedpositionwithclearanceforejectingcartridges.
2.
3.
IMMEDIATE ACTIONS — IN CASE OF TROUBLE!
IF YOUR FIREARM STOPS FIRING: Perform the following IMMEDIATE ACTIONS…Remembertheword“SPORTS”
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1.SlapupontheMagazinetoensureagoodlockupintheLowerReceiver.
2.PulltheChargingHandleallthewaybackandhold.
3.ObservetheejectionoftheCaseorCartridge,checkChamberforanyobstruction.
4.ReleasetheChargingHandleandlettheBoltspringforward.
5.TaptheChargingHandletoassisttheBoltforwardtoensuretheBoltislocked.
6.Squeezethetriggertofire.
REMEDIAL ACTIONS…
1.IfyourFirearmstillfailstofireafterperformingImmediateActionSteps1through5onpreviouspage,checkagainforajammedcartridgecase.
2.Ifacartridgecaseisinthechamber,openthereceivers,removetheboltcarrier,andtrytotapoutthecasewithacleaningrod.
IF FIREARM STILL FAILS TO FIRE CHECK THE TROUBLESHOOTING SECTION IN THIS MANUAL OR TAKE THE FIREARM TO A QUALIFIED GUNSMITH.
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WARNING: IF YOUR FIREARM STOPS FIRING WITH A LIVE ROUND IN THE CHAMBER OF A HOT BARREL, REMOVETHE ROUND IMMEDIATELY. However,ifyoucannotremoveitwithin10seconds,removetheMagazineandwait15minuteswiththeFirearmpointinginasafedirection(alwayscheckthatthe“SAFE”directionremainssafeduringthattime).Thiswayyouandthosearoundyouwon’tgethurtbythepossibilityofaround“cookingoff”.
KEEP YOUR FACE AWAY FROM THE EJECTION PORT WHILE CLEARING A HOT CHAMBER.
BULLET STUCK IN THE BORE…
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WARNING: IF AN AUDIBLE “POP” OR REDUCED RECOIL IS EXPERIENCED DURING FIRING, IMMEDIATELY CEASE FIRE: Then,1.RemovetheMagazine. 2.LocktheBolttotherear.
4.Visuallyinspectand/orinsertaCleaningRodintotheBoretoensurethereisnotaBulletstuckintheBore.
DO NOT APPLY THE “IMMEDIATE ACTIONS” DESCRIBED ON PREVIOUS PAGES. IF A BULLET IS STUCK IN THE BARREL OF THE FIREARM, DO NOT TRY TO REMOVE IT. TAKE THE FIREARM TO A QUALIFIED GUNSMITH.
3.PlacetheSelectorLeveronSAFE.
BACK UP SIGHTS
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TheFrontSightPostisthreaded-allowingittobemovedupordownforElevationAdjustmentswhen“Zeroing”theRearSight(see“ZeroingYourSights”onnextpage).OncetheRearSightisZeroed,theFrontSightPostshouldnotbemoved.
REAR BACK UP SIGHTTheRearBackUpSightfeaturestwoaperturesandwhennotusedcanbefoldeddownflat.Toreturntotheuppositionpresseitherthesidetabs.
NORMAL RANGE APERTURE:ThesmallerApertureisthedefaultsettingandisusedformostfiringsituations,optimizedfor100-300meters.
SHORT RANGE APERTURE: RotatetheNormalRangeApertureforwardanddowntorevealtheShortRangeAperture.Thisapertureisusedforrangesof0-100meters,allowingalargerfieldofview.
WhennotinusetheFrontandRearSightscanbefoldeddownflat.Toreturnelevatesightspressdowneitherthesidetabsordownontheforwardportionofeithersighttoengagethespringloadedrelease.Toremovethesights,loosenandremovetheLockingBoltandguidethesightsforwardofftheendoftheMIL-STD-1913PicatinnyTopRail.
ZEROING YOUR SIGHTS…
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FollowthestepsbelowtoestablishaZeroat25meters.YourMBUSTypeRifleSightswillthenbesetwitha300-meterbattlesightzero.Withthisprocedure,onlytheFrontSightPostandRearSightWindageKnobareadjustedsothatyoucanhityourPointofAimat300meters.
25 METER ZEROING PROCEDURES…
1.Placeanappropriate25MeterPaperSightingTarget25metersdownrangeandfollowthestepsbelowtoestablisha“battlesight”zero.DonotmovetheFrontSightPostatthistime.Itwassetatthefactoryandshouldbeverycloseto“Zero”.
(Bushmaster Sighting-In Targets, Part# QP-015K - see Bushmaster Catalog or Website)
2.Thesmaller(unmarked)RearSightApertureshouldbeintheUPposition.CentertheRearSightbyturningtheWindageKnobleftorright.Thiscreateswhatiscalled“MechanicalZeroWindage”.
3.Checkthatyourfieldoffireisclear,andthatitissafetoshoot.Carefullyaimandfireagroupofthreeshotsatthecenterofthetargetbullseye.
4.Inspectyourtarget-ifyourshotgroupisnotinthecenterofthebullseye,thesquaresonthetargetsheetwillhelpyoucalculatetherequired“clicks”necessarytomoveyournextshotgrouptowardthebullseye.
(Remember!-anychangesinelevationaretobemadebymovingthefrontsightpost)
ZEROING YOUR SIGHTS… (cont’d.)
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5.Ifyouneedtoraiseyournextshotgrouptogetclosertothebullseye,rotatetheFrontSightPostclockwiseoneclick.AFrontSightAdjustmentTool(Part#RAY-005-seeBushmasterCatalogorWebsite)isrecommendedforthisbutnotnecessary–thesightcanbeadjustedwiththetipofaBulletasshownatright.Oneclickwillmovethebulletstrikepointoneverticalsquareonthetargetsheet.
6.Ifyouneedtoloweryournextshotgroup,rotatetheFrontSightPostcounterclockwise.(Oneclick-asbefore–equalsonesquare.)ChangesinWindagearemadewiththeWindageKnobontheRearSight.Tomovetheshotgrouptotheleft,turntheWindageKnobcounter-clockwise.Tomovetheshotgrouptotheright,turntheWindageKnobclockwise
7.Carefullyaimandfireanothergroupatthecenterofthetargetbullseye.RepeatSteps5and6asrequiredtogetyourshotgroupsintothebullseye.
8.Onceyourshotgroupisontarget,yourSightsarezeroed,or“calibrated”.
Elevation Adjustment Table a.SightRadius:14.1in. b.BulletStrikeAdjustment: Impact Distance 0.485in./click 25m 1.939in./click 100m 5.817in./click 300m
Windage Adjustment Table a.SightRadius:14.1in. b.BulletStrikeAdjustment: Impact Distance 0.323in./click 25m 1.293in./click 100m 3.878in./click 300m
DISASSEMBLING YOUR FIREARM…
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1.CLEARYOURFIREARM!(asdescribedonPage6).DisconnecttheSlingforconvenience.
2.PushtheRearTakedownPin(aBulletTipcanhelp)asfarasitwillgo.PivotUpperReceiverfromLowerReceiver.
5.PushtheChargingHandlefullyforwardtodisconnecttheActuatorfromtheBoltCarrier.RemoveBoltCarriertotherear.
4.SeparateUpperandLowerReceivers.
3.PushinPivotPin(aBulletTipcanhelp).
NOTE: PivotPinintheLowerReceiverandTakedownPinintheUpperReceiverare“captivated”-meaningthattheyareheldinbytheirDetentsandSpringssotheycannotfalloutandgetlost.
DISASSEMBLING YOUR FIREARM… (cont’d.)
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6.RemovetheActionSpringAssemblyfromtheBoltCarrierbypressinginward(towardfrontoftheBolt)andtwistingcounter-clockwiseuntiltheslotsonthecarrierarein-linewiththeprongsonthefrontoftheActionSpringAssemblyGuideandthenremovetheActionSpringAssembly.
7.RemoveFiringPinRetainingPin.ABulletTipcanhelppushitoutoftheBoltCarrier.
8.RemoveFiringPinandFiringPinSpringoutofrearofBoltCarrier.
DISASSEMBLING YOUR FIREARM… (cont’d.)
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9.RemoveCamPinbyturningBoltCarrieronthesideandtappingoppositesideofBoltCarrier.CamPinshouldfallout.
10.RemoveBoltAssemblyfromBoltCarrierbypullingstraightout.
12.RemoveExtractorwithSpring.
11.RemoveExtractorPinbypushingoutwithapunchorthetipofaBullet.
NOTE: PressrearofExtractortocheckSpringfunction.CAUTION: ExtractorSpringmaypopoutandgetlost!
DISASSEMBLE USING STEPS 11 AND 12 ONLY WHEN DIRTY OR DAMAGED
DISASSEMBLING YOUR FIREARM… (cont’d.)
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4.WiththeBarrelPlungerdepressed,turntheBarrelLockingLever.counter-clockwiseuntilitstops.
5.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.
REMOVING THE BARREL ASSEMBLY1.PullCharging
Handleandlocktotherear.
2.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.
3.LowertheBarrelLockingLeveranddepresstheBarrelPlunger.
DISASSEMBLING YOUR FIREARM… (cont’d.)
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3.RemovePistonRodandPistonSpringthroughthefrontoftheGasBlock.
NOTE: TheGasPistonSystemcanbedisassembledwiththeBarrelattachedorremovedfromtheUpperReceiver.
DISASSEMBLING THE GAS PISTON SYSTEM
2.PullGasRegulatorstraightouttoremove.
1.DepressRegulatorPlungerandrotateuntilitisfacingtowardthebarrel.
BUSHMASTER DOES NOT RECOMMEND ANY FURTHER DISASSEMBLY. ANY FURTHER DISASSEMBLY MUST BE PERFORMED BY A QUALIFIED GUNSMITH.
INSPECTION — CLEANING — LUBRICATION…
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AFTER FIRING YOUR FIREARM, cleanitassoonaspossibletomakethejobeasierandtoavoidallowingthedevelopmentofanycorrosion.When your Firearm has not been fired youshouldcleanitatleastonceortwiceayearifyouliveinatemperateclimate,orasoftenasonceaweekinatropicalclimate.
If you get your Firearm wet, cleanitassoonaspossibletoavoidtheonsetofcorrosionorrust.
UseahighqualityFirearmcleaningkitthatincludesacleaningrod;swabholder;cottonflannelborepatches;pipecleaners;asmalltoothbrush;brasswirebristleboreandchamberbrushesandaCleaner/Lubricant/Preservative(CLPinArmyterminology).
After you have disassembled the Firearm, thoroughly clean, inspect and lubricate all parts according to the techniques described on following pages.
Cleaning Kit with Patch Holder, Bore & Chamber Brushes
A Quality Gun Oil,Cleaner and Preservative
Cotton Flannel Bore Patches
PLUS, anoldtoothbrushforcleaningpartsanddislodgingdirtbuild-up,andpipecleanersorQ-tipsforcleaninghardtoreachareas.
THE BUSHMASTER ACR IS DESIGNED TO OPERATE WITHOUT LUBRICATION AND AFTER CLEANING, ALL ACTION PARTS SHOULD BE WIPED DRY.
DETAILED CLEANING TECHNIQUES…
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NOTE: Theproceduresbelowdescribecleaningwithastandardmilitaryissuetypemulti-piecerodcleaningkit.Othercommercialcleaningkitsmayincludealternatecleaninginstructionswhichmaybejustaseffective.
CLEANING THE BORE: TheboreofyourACRriflehasLandsandGroovescalledrifling.RiflingmakesthebulletspinveryfastasitmovesdowntheBoreanddownrange.Itisdifficulttopushanew,stiffBoreBrushthroughtheBore.Youwillfinditmucheasier,andmoreeffective,topull your Bore Brush through the Bore.Also,becausethebrushwillcleanbetterifthebristlesfollowthegrooves(thisiscalledtracking),youwanttheBoreBrushtobeallowedtoturnasyoupullitthrough.
To make cleaning the Bore easier, you may remove the barrel from the Upper and replace once the Bore and Chamber are cleaned. The zero ofthe barrel will not be lost.
ALWAYS CLEAN FROM THE CHAMBER TOWARD THE MUZZLE. Followthesesteps:
1.AttachthreeRodSectionstogetherbutleaveeachoneabouttwoturnsshortofbeingtight.AttachthePatchHolderbutleaveittwoturnsshortoftightalso.
2.PointMuzzledown.HoldtheUpperReceiverorBarrelAssemblyinonehandwhileinsertingtheendoftheRodwithPatchHolderattachedintotheChamber.GuidetheRodcarefullythroughtheBore.
CAUTION: DonotlettheRodoritsthreadedendscratchtheLiningoftheBoreorFiringChamber.About2-3inchesoftheRodshouldprotrudeoutoftheMuzzle.
3.AttachtheHandleSectionoftheCleaningRodtotheendoftheRodstickingoutoftheMuzzle,andswabouttheBorewithapatchmoistenedwith“CLP”.
DETAILED CLEANING TECHNIQUES… (cont’d.)
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4.RemovePatchHolderandattachBoreBrush(leavingittwoturnsshortoftight).
5.PulltheBrushthroughtheBoreandouttheMuzzle.YoushouldbeabletoseetheRodtwistingasyoupullit-thisistheBrush“tracking”intherifling.
NEVER reversethedirectionoftheBoreBrushwhileitisintheBore.
6.Afteronepull,takeoffthehandlesectionandrepeattheprocess.Afterthreeorfourpulls,thethreerodsectionsandtheBoreBrushmaybecomescrewedtightlytogether.Loosenthemupandrepeattheprocess.
7.SendapatchthroughtheBoreoccasionallytohelpcleanoutthecrudthatthebrushisgettingloose.JustreplacetheBoreBrushwiththeRodTip(PatchHolder)andawetpatch.Pullitthrough.Ifyouleavetherodslooseagain,thepatchwill“track”intheriflingasbefore.Butremember,alwayshavetheBorewet with cleaner beforetryingtopullabrushthrough.
1.UseChamberBrushsoakedwithCLPtocleantheinsideoftheGasBlock.
2.RemovecarbonandcleantopofbarreljustforwardoftheGasBlockwherehotgasisportedoutoftheGasRegulator.
3.WipedownPistonRodandPistonSpring.
4.Lubricateallpartsandwipedry.
CLEANING THE GAS REGULATOR AND PISTON SYSTEM:
CLEANING THE UPPER RECEIVER…
29
1.Usinga“CLP“typeproduct,cleanallareas(insideandout)ofPowderFouling,CorrosionandDirt.
Never useawirebrushoranytypeofabrasivetocleantheAluminumUpperReceiverorBearingRails-you’llscratchanddamagethefinish.AToothbrushisgoodforlooseninganydirtbuildup,andwon’tscratchtheReceiver.2.Wipeallcomponentscleananddry,andinspectforexcessivewear,corrosionormechanical
damage.HaveaqualifiedGunsmithreplaceanywornordefectivepartsbeforefiringagain(orcontactBushmasterat1-800-998-7928forpartsneeds.)
1.CleanandinspectBolt,CamPin,FiringPin,FiringPinSpring,FiringPinRetainingPinandActionSpringAssemblythoroughly.
CHECK THE BOLT: Lookforcracksorfractures,especiallyintheCamPinholearea.InspectBoltFace-Boltswithanypittingextendingintothefiringpinholeshouldbereplaced.CHECK THE CAM PIN: Ifitiscracked,orchipped,itshouldbereplaced.NOTE:CamPincanonlybeinstalledinBoltfromoneside-soEjectorwillbepositionedcorrectly.CHECK THE FIRING PIN: Ifitisbent,cracked,toobluntedortoosharp,itshouldbereplaced.
CHECK THE FIRING PIN RETAINING PIN: Ifitisbent,orbadlyworn,itshouldbereplaced.IfO-ringisbroken,wornormissingitshouldbereplaced,thoughtheFirearmwillstillfunctionsafely.
WIPE ALL PARTS DRY BEFORE REASSEMBLING BOLT CARRIER. WARNING: IF THECAM PIN IS MISSING, DO NOT FIRE THE FIREARM – IT COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
CLEANING THE BOLT, BOLT CARRIER & COMPONENTS...
CLEANING THE UPPER RECEIVER… (cont’d.)
30
CHECK THE EXTRACTOR AND EXTRACTOR SPRING:IftheExtractorischipped,orhasbrokenedgesintheareaofthelipthatengagesthecartridgerim,itshouldbereplaced.CheckthattherubberinsertisinsidetheExtractorSpring.CleanoffanyCarbonbuilduporpowderresidue.
NOTE:ThedesignoftheEjectormakesitsdisassemblyforcleaningsomewhatimpractical(i.e.wedon’trecommendit).MakesureyourBushmasterejectsemptycasesefficientlybyfollowingthesestepsonamonthlybasis(morefrequentlyiffiringblanks).
1.WiththeBoltremovedfromtheBoltCarrierandtheExtractorinstalled,holditasshown,anddribbleafewdropsofCLParoundtheEjectortoformapuddle.
2.TakeafiredordummycaseandplaceitunderthelipoftheExtractor.Witharockingmotion,pressthecasedownagainsttheEjector.SincetheEjectorisspringloaded,someresistancewillbefelt.Pressonthecaseuntilitstopsagainsttheboltface.Easeoffwithyourthumbslightlyandpressdownagain.Repeatseveraltimes.ReplacetheCLPfrequently.OncethespringactionoftheEjectorissmoothandstrong,dryoffanyexcesslubricant.
CLEANING/LUBRICATING THE EJECTOR…
CLEANING THE BOLT, BOLT CARRIER & COMPONENTS…
Extractor
Rock Empty CaseAgainst Ejector To Lubricate
Ejector
CLEANING THE LOWER RECEIVER…
31
1.CleanallareasofPowderFouling,Corrosion,DirtandRust.Again,neveruseawirebrushoranytypeofabrasivetocleantheproprietarycompositepolymerLowerReceiver.
2.Stocksmayrequirecleaningasnecessaryandshouldbecleanedwithmilddetergentandwater.Drystockorletairdryafterithasbeencleaned.
1.InsertPistonRodandPistonSpringthroughGasBlockandPistonRodthroughGuideBlock.
3.AttachtheBarrelAssemblybyguidingtheBarrelExtensionintotheTrunnion.ThepistonwillpassthroughanopeningintheTrunnion.
2.InsertGasRegulatorandrotatetoeither“U”or“S”
REASSEMBLING YOUR FIREARM…
REASSEMBLING YOUR FIREARM… (cont’d.)
32
4.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.OnceseatedintotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositivestop(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLockingRingwillmakeaudibleclicksasthetorqueisbeingappliedforproperinstallation.
5.InstallHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.
REASSEMBLING YOUR RIFLE… (cont’d.)
33
6.InsertBoltintoBoltCarrier.TwistintopositionsoCamPincanbeinserted(rememberCamPincanonlybeinstalledinBoltfromoneside,soifitdoesn’tfitrightaway,twisttheBolt180°andtryagain).
7.OnceCamPinisinserted,aligntheridgeontheheadoftheCamPinsoitisparallelwiththeBolt.
WARNING: THE CAM PIN MUST BE INSTALLED IN THE BOLT GROUP. IF IT ISN’T, YOUR FIREARM CAN STILL FIRE AND COULD MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
8.InsertFiringPinintoFiringPinSpring;DropinandseatFiringPinandSpringintoBoltCarrier.
9.LightlypresstheFiringPinintotheBoltCarrier;whileholding,insertFiringPinRetainingPin.
REASSEMBLING YOUR FIREARM… (cont’d.)
34
10.InsertActionSpringAssemblyintotheBoltCarrierbypressinginward(towardfrontoftheBolt)andtwistingclockwiseuntilthetabsonthefrontoftheActionSpringAssemblyGuideareinlinewiththeRetainingSlot.
NOTE: TheRecoilLugatthebackoftheActionSpringAssemblyshouldbepointinguptowardthetopoftheUpperReceiver.
NOTE:AfterinsertingFiringPinRetainingPin,FiringPinshouldnotfalloutwhenBoltCarrierAssemblyisturnedupsidedown
REASSEMBLING YOUR FIREARM… (cont’d.)
35
CAUTION: BUSHMASTER DOES NOT RECOMMEND THE PRACTICE OF SWAPPING BOLTS BETWEEN DIFFERENT FIREARMS. DOING SO COULD RESULT IN MALFUNCTION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
11.InsertBoltCarrierassemblyintotheUpperbyaligningthenotchesontheCarrierwiththeBearingRailsinsidetheUpper.MoveforwarduntilthelockinglugsengagetheTrunnion.
12.TojoinUpperandLowerReceivers,positionPivotPinLugofUpperReceiverintoslotatfrontofLowerReceiverandpushPivotPinintoplace.
CAUTION: Always placetheSafetySelectorLeveronSAFEbeforepivotingtheUpperReceivertoaclosedpositionontheLowerReceiver.
13.AfterReceiversareclosed,pushinTakedownPin.
14.Toensureproperreassembly,performthesafetyfunctioncheck(Seepage8)priortoanyattempttofiretheRifle.
IftheSling,oranyotherAccessorieswereremovedforcleaningormaintenance,theyshouldbereattachednow.
SLING REATTACHMENT…
MAGAZINE DISASSEMBLY/REASSEMBLY
36
1.UnloadMagazinefully.
2.TurnMagazinebaseup.PushdownandforwardonFloorplatewithabulletheadorotherappropriatedevice.
CAUTION: Floorplateisunderpressure,soensurecareuponremoval.Alwaysweareyeprotection.
MAGAZINE DISASSEMBLY/REASSEMBLY… (cont’d.)
37
3.PullgentlyonMagazineSpringandFollowertoseparatefromMagazinebody.
4.WipedirtfromBody,MagazineSpringandFollower;thenlightlylubricateSpring.
5.OrientFollowerandMagazineSpringtoMagazineBodyandcarefullyinsertthroughbottomofMagazineBody.
6.SlideFloorplateoverliponbottomofMagazineBodyandcontinueslidingFloorplateovertabsuntilrearofFloorplatecatchesonMagazineBody.
RE-CONFIGURING THE FIREARM
38
STOCK CHANGE
1.PushtheRearTakedownPin(aBullettipcanhelp)asfarasitwillgo.PivotUpperReceiverfromLowerReceiver.
2.PushtheStockRetainingPinout.3.Slidestockupwardtoseparatefromlowerreceiver.
RE-CONFIGURING THE FIREARM (cont’d.)
39
4.Replaceorinsertnewstockdownwardintocavity.
5.PushStockRetainingPinclosed.
6.PivotUpperReceiverandLowerReceivertogetherandpushRearTakedownPinclosed.
STOCK CHANGE
1.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.
HAND GUARD CHANGE
RE-CONFIGURING THE FIREARM (cont’d.)
40
2.InstallalternateHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.
1.LocateChargingHandleReleaseButton.
2.Whileusingapunchorbullettip,depressReleaseButtonandslidetotherearwhilepullingtheChargingHandleawayfromtheUpperReceiver.
CHARGING HANDLE
RE-CONFIGURING THE FIREARM (cont’d.)
41
3.StillholdingtheReleaseButtontotherear,swapChargingHandletotheoppositesideandre-insertorinsertalternateChargingHandle.
1.RemoveMagazine.
2.UnloadandclearFirearm.
3.RemoveHandGuardbypushingtheHandGuardRetainingPinthroughasfarasitwillgoandslidetheHandGuardforward.
4.LowertheBarrelLockingLeveranddepresstheBarrelPlunger.
5.WiththeBarrelPlungerdepressed,turntheBarrelLockingLevercounter-clockwiseuntilitstops.
6.PulltheBarrelAssemblyforwarduntilitreleasesfromtheTrunnion.
CHARGING HANDLE
CALIBER CONVERSION
RE-CONFIGURING THE FIREARM (cont’d.)
42
7.RemovetheBoltCarrieranddisassemble(Seepage22).
8.SelectproperboltheadforcaliberFirearmisbeingconvertedto.
9.InstallBoltintoBoltCarrier.
10.ReassembleBoltCarrier.
11.EnsureBoltCarrierisremovedfromactionorislockedtotherear.
12.Selecttheproperbarrelforthecaliberrifleisbeingconvertedto.
13.GuidetheBarrelExtensionintotheTrunnion.ThepistonwillpassthroughanopeningintheTrunnion.
14.GuidetheBarrelLockHandletotherightuntilitengageswiththeTrunnion.OnceseatedintotheTrunnion,turnthebarrellockingleverclockwiseuntilthereisapositivestop(youmayhavetodepresstheBarrelPlungertostartrotation).TheBarrelLockingRingwillmakeaudibleclicksasthetorqueisbeingappliedforproperinstallation.
15.InstallHandGuardovertheBarrelAssemblyandpushHandGuardRetainingPinclosedtolockintoplace.
16.InsertBoltCarrierintotheUpperbyaligningthenotchesontheBoltCarrierwiththeBearingRailsinsidetheUpper.MoveforwarduntiltheLockingLugsengagetheBarrelExtension.
17.SelecttheproperMagazineandfollowinstructionsforoperatingtheFirearm(Seepage10).
CALIBER CONVERSION
PROBLEMS/SOLUTIONS…
43
Problem: Check For: What To Do:Firearm won’t fire SelectorLeveronSAFE PutitonFIRE ImproperAssembly AssembleCorrectly- FiringPin Retaining Pin Goes In Back Of Large Shoulder On Firing Pin
CorrectBarrelInstallation RemoveandRe-Attach
BoltNotLockedInChamber TapForwardAssist
TooMuchOilInFiringPinRecess WipeOutWithPipeCleaner
DefectiveAmmunition RemoveandDiscard
TooMuchCarbonOnFiringPin Clean OrInFiringPinRecess
PROBLEM: FIREARM WON’T FIRE
PROBLEMS/SOLUTIONS… (cont’d.)
44
Problem: Check For: What To Do:Bolt won’t unlock DirtyorBurredBolt Clean,orSeeQualifiedGunsmith Barrelnotproperlyinstalled Removeandre-attach
CamPinNotInstalled InstallCamPin
Problem: Check For: What To Do:Won’t extract BrokenExtractorSpring SeeQualifiedGunsmith
DirtyOrCorrodedAmmo RemoveStuckRound PushOutWithCleaningRod
CarbonInChamber CleanChamber
FoulingOrCarbonInExtractor CleanExtractor RecessOrLip
FrozenExtractor RemoveandClean
RestrictedMovementofBolt Remove,CleanandLube CarrierGroup
PROBLEM: BOLT WON’T UNLOCK
PROBLEM: WON’T EXTRACT
PROBLEMS/SOLUTIONS… (cont’d.)
45
Problem: Check For: What To Do:Won’t feed DirtyorCorrodedAmmo Clean DirtyMagazine Clean
DefectiveMagazine Replace
TooManyRoundsinMagazine TakeOutExcess
MagazineNotFullySeated RemoveMagazineand CleanMagazineWell
Barrelnotproperlyinstalled Removeandre-attach
Problem: Check For: What To Do:Double feed DefectiveMagazine Replace
Problem: Check For: What To Do:Won’t chamber DirtyorCorrodedAmmo Clean
PROBLEM: WON’T FEED
PROBLEM: DOUBLE FEED
PROBLEM: WON’T CHAMBER
PROBLEMS/SOLUTIONS… (cont’d.)
46
Problem: Check For: What To Do:Won’t unlock DamagedAmmo Replace CarbonInChamber Clean
Dirt,CorrosionorCarbonBuildUp CleanLugs inBarrelLockingLugs
Barrelnotproperlyinstalled Removeandre-attach
Problem: Check For: What To Do:Short recoil PistonBindinginGasBlock CleanGasBlock
AlignmentofGuideBlock Re-alignandtighten
BrokenGasPistonSpring Replacepart
ProperlyinsertedAction RealignActionAssemblySpring AssemblySpring
ProperSettingofGasRegulator SetCorrectlyforUnsuppressedor Suppressedfire
BentGasPiston Replacepart
PROBLEM: WON’T UNLOCK
PROBLEM: SHORT RECOIL
PROBLEMS/SOLUTIONS… (cont’d.)
47
Problem: Check For: What To Do:Bolt fails to lock FaultyMagazine Replaceafter last round ProperSettingofGasRegulator SetCorrectlyforUnsuppressedor Suppressedfire
Problem: Check For: What To Do:Selector level binds DirtorSandUnderTrigger Clean
ProperAssembly RemoveandRe-Assemble
Problem: Check For: What To Do:Selector lever SelectorLeverDetentPlate SeeQualifiedGunsmithspins freely EngagementtoHammerSpring
Problem: Check For: What To Do:Bolt carrier “hung up” DoubleFeed RemedialAction BoundGasPiston Clean,CheckforGuideBlockAlignment
PROBLEM: BOLT FAILS TO LOCK AFTER LAST ROUND
PROBLEM: SELECTOR LEVER SPINS FREELY
PROBLEM: BOLT CARRIER “HUNG UP”
PROBLEM: SELECTOR LEVER BINDS
MAINTENANCE IN EXTREME WEATHER…
48
EXTREME COLD: CleanandlubricateFirearminawarmroomwithFirearmatroomtemperature.DonotlayawarmFirearmdirectlyonsnoworice.MovingFirearmfromcoldintowarmthwillcausecondensationwhichcouldkeepFirearmfromfunctioning.
HOT WET CLIMATES: CleanandlubeFirearmmorefrequentlyinmoistclimates.InspecthiddensurfacesofBoltandCarrierAssembly,UpperReceiver,andChamber/BarrelExtension(LockingLugs),andLowerReceiverforrustorcorrosion.AlsopaycloseattentiontotheSpringLoadedDetentsontheFirearm.Wipeoffanyhand/fingerprintsontheFirearmastheycanacceleratetheonsetofrustorcorrosion.
HOT, DRY CLIMATES: Takeextracarewithcleaningandlubricationasriflewillbeexposedtoblowingsandandfinedust,andextremetemperatureshifts(hotinthedaytime,freezingatnight).Corrosionislesslikelytoformonmetalpartsinadryclimate.Firearmshouldnotrequireanylubrication.
HEAVY RAIN: DO NOT FIRE THE FIREARM IF WATER IS PRESENT IN THE BARREL: ExcesspressurecancausetheFirearmtoexplode.
ALWAYS drainanywaterfromBarrelpriortofiring.DrytheBorewithaSwabandCleaningRodifwet.
PARTS AND ACCESSORIES…
49
ThereareamultitudeofwaysfortheBushmasterACRtobeupgradedorcustomizedforyourspecificuse.Avarietyofbarrellengths,profiles,caliberconversionkits,alternatestocks,handguards,andcontrolpartsareavailable.ForacompletelistingofreplacementpartsandaccessoriespleaserefertotheBushmasterParts&AccessoriesCatalogorgoonlineatwww.bushmaster.com/acr.
Toplaceanordergoonlineorcall1-800-998-7928totalkwithaCustomerServiceRepresentative.
OnlyauthorizedBushmasterpartsandaccessoriesarerecommendedforusewithyourACR.
COMPONENT VARIATIONS…
50
ThismanualisintendedtoinstructtheBushmasterACROperatorinallnecessaryaspectsofMaintenance,Disassembly,Reassembly,OperationandTroubleshootingparticulartothisfirearm.
WithintheBushmasterACRlineofproductstherecanbeinfinitevariationsofBarrelLengthandType,StockType,LowerReceivers,HandGuardsandSights.
COMPONENT VARIATIONS…
51
TheBushmasterACRyouown,orareusing,mayvaryinappearancefromthephoto-graphsandillustrationsinthisManual,buttheconcepts,proceduresandpracticesrecommendedinthisManualareuniversaltotheBushmasterACR.
LIMITED ONE YEAR WARRANTY…
52
BushmasterFirearmsarewarrantedtobefreefromdefectsinmaterialsandworkmanship.AnysuchdefectofwhichBushmasterFirearmsInternational,LLCisgivenwrittennotice,asprovidedbelow,withinoneyearandtendaysfromthedateoffirstpurchasebyacustomerwillberemediedbyBushmasterFirearmsInternational,LLC.ThiswarrantyisgrantedbyBushmaster Firearms International, LLC, P.O. Box 1479, 999 Roosevelt Trail, Windham, ME 04062.
ToinitiateaWarrantyclaim,callBushmasterCustomerService(tollfree:8:30AMto7:00PME.S.T.-MondaythruFriday-1-800-883-6229)togeta“ReturnMerchandiseAuthorization”(RMA)number.Warrantyclaimsshouldstate(inwriting)themodelandserialnumberofthefirearmconcerned,adescriptionofthedifficultyexperienced,andthedateofpurchase.Thefirearmconcernedshouldbeshipped(transportationchargesprepaid),totheWarranty Service Department, Bushmaster Firearms International, LLC, 999 Roosevelt Trail, Windham, ME 04062.Firearmshipmentshouldbeinsuredbytheowner,asBushmaster Firearms International, LLC will accept noresponsibility for loss or damage in transit.
ShippingandinsurancechargesforthereturnofafirearmtoitsownerwillbepaidbyBushmasterFirearmsInternational,LLCiftherelatedclaimisaproperclaimforwarrantywork.
LIMITED ONE YEAR WARRANTY…
53
Under no circumstances shall Bushmaster Firearms International, LLC be responsible for incidental or consequential damages with respect to economic loss or injury to property, whether as a result of express or implied warranty, negligence or otherwise.Somestatesdonotallowtheexclusionoflimitationofincidentalorconsequentialdamages,sotheabovelimitationmaynotapplytoyou.BushmasterFirearmsInternational,LLCwillnotberesponsiblefortheresultsofcarelesshandling,unauthorizedadjustments,defective,lowquality,reloaded,orimproperammunition,corrosion,neglect,ordinarywearandtear,orunreasonableuse.Furthermore,theliabilityofBushmasterFirearmsInternational,LLCunderthiswarrantyshallbelimitedsolelytotheobligationtorepairorreplacethefirearm,andtopaytransportationandinsurancechargesforreturnofthefirearmtoowner.
NOTE:HandgunsandlonggunsareclassifiedasFIREARMSorDANGEROUSWEAPONS.GunsaresurrenderedbyBushmasterFirearmsInternational,LLCwiththeexpressunderstandingthatitassumesnoresponsibilityforresalehandlingunderlocallawsandregulations.
PLEASE PRACTICE SAFE FIREARMS HANDLING!
54
WARNING: IF THIS FIREARM IS CARELESSLY OR IMPROPERLY HANDLED, UNINTENTIONAL DISCHARGE COULD RESULT AND COULD CAUSE PERSONAL INJURY, DEATH, OR DAMAGE TO PROPERTY.
CAUTION: CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRING THIS FIREARM. FOLLOW ALL INSTRUCTIONS ON THE PROPER HANDLING AND SAFE USE OF THIS FIREARM - LIVES MAY DEPEND ON IT!
CAUTION: USE ONLY CLEAN, DRY, HIGH QUALITY COMMERCIALLY MANUFACTUREDAMMUNITION IN GOOD CONDITION whichisappropriatetothe5.56mmNATO/223Remingtoncaliberofyourfirearm.Bushmasterdoesnotrecommendtheuseofremanufacturedorhandloadedammunitionbecauseitmaydamageyourrifle.
WARNING: THIS FIREARM COULD CHAMBER A ROUND ifitisdroppedorjarredwithaloadedmagazineinplace-eitherwiththeBoltCarrierAssemblylockedtotherear,orinitsforwardposition.
A SAFETY NOTE REGARDING LEAD... Dischargingfirearmsinpoorlyventilatedareas,cleaningfirearms,orhandlingammunitionmayresultinexposuretolead,asubstanceknowntocausebirthdefects,reproductiveharm,andotherseriousphysicalinjury.Haveadequateventilationatalltimes.Washhandsthoroughlyafterexposure.
ThisBushmasterOperatingandSafetyInstructionManualshouldalwaysbekeptwithyourBushmasterFirearm,andincaseofsaleortransfer,shouldbepassedontosubsequentowners.
Model:_______________________________________________________________ SerialNumber:________________________________________________________ SoldTo:______________________________________________________________ DateSold:_____________________________________________________________
NOTES
55
NOTES
56
Bushmaster Firearms International, LLC
999 Roosevelt Trail • P.O. Box 1479 • Windham, ME 04062
www.bushmaster.com
For more product information, visit www.bushmaster.com/signin
Printed in U.S.A.Bushmaster is a trademark of Bushmaster Firearms International, LLC.Magpul is a trademark of Magpul Industries Corp. BFI-MAN-ACR