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OWNER’S MANUAL FOR OA SERIES FIREARMS 620-626 Old Pacific Hwy SE Olympia, WA 98513 (360) 459-7940

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Page 1: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

OWNER’SMANUAL FOR

OA SERIES FIREARMS

620-626 Old Pacific Hwy SEOlympia, WA 98513

(360) 459-7940

Page 2: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

WARNINGTo avoid accidental firing, BE SURE WEAPON IS CLEAR. Failure to do socould result in serious injury or death.Be sure the cam pin is installed in the bolt group. If it isn’t, your OA-93/OA-96can still fire and will explode, causing injury or death.DO NOT exchange or switch bolt assemblies from one OA-93/OA-96 toanother. It could cause damage to both you and your weapon. DO NOTattempt to install a standard AR-15 or M-16 bolt or bolt carrier in your OA-93/OA-96. Any attempt to do so will cause damage to both you and it.DON’T OVERHEAT YOUR OA-93/OA-96’s BARREL. Sustained firing of theOA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point.Firing 140 rounds, rapidly and continuously will raise the temperature of thebarrel to the COOKOFF POINT. At this temperature, any live round remainingin the chamber for any reason may cookoff (detonate) in as short a period as 10seconds.If the cookoff point is felt to be possible, CLEAR YOUR WEAPON ANDALLOW IT TO COOL.Sustained rate of fire for the OA-93/OA-96 is 12-15 rounds per minute. This isthe actual rate of fire that this weapon can continue to deliver for anlength of time without seriously overheating.

indefinite

Sustained rate of fire should never be exceeded except under circumstances ofextreme urgency.If your bolt fails to unlock and you try to free it by banging the receiver assem-bly, keep clear of the muzzle.If there’s water in the barrel, don’t fire the weapon. It could explode.If you experience a noticeable difference in sound or recoil, STOP FIRING.Either condition could indicate an incomplete propellant burn and a bullet stillin the bore. Retract bolt slowly and remove fired cartridge case. Clear weaponand check for unburned powder grains in the receiver or bore, and for a bulletin the bore. Remove unburned propellant or bullet from bore before resumingfiring or barrel could explode. If bullet is lodged in bore, take your carbine to aqualified gunsmith.If your OA-93/OA-96 stops firing with a live round in the chamber of a hot bar-rel, remove the round quickly. If you cannot remove the round within 10 sec-onds, point the OA-93/OA-96 in a safe direction and wait 15 minutes. In thisway, you won’t be injured by a possible ammunition cookoff, which could hap-pen within 10 seconds after contact with a hot chamber. Clear your OA-93/OA-96.Use only authorized brass case ammunition that is manufactured in the U.S.A.,to U.S. specifications. Do not use re-manufactured or imported ammunition.Please read this manual carefully before attempting to use your OA-93/OA-96.

Page 3: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

TABLE OF CONTENTSTechnical Principles of Operation, OA-93 and OA-96 Series 4Operating Instructions

Description and Use of Operator’s Controls 5Loading 6-7Chambering and Firing 8-9Clearing 10-12

Operation under Unusual Conditions 13Field Stripping - OA-93 /OA-96 All Models 14

OA-93 Carbine Model 1 15OA-93/OA-96 Model 1 16OA-93/OA-96 & Carbine Model 2 17

Exploded Views, Upper Receiver 18Bolt Carrier Disassembly 20Cleaning and Lubricating Upper Receiver and Barrel Assembly 22

Bolt Carrier Assembly 23-25Lower Receiver 26

Bolt and Bolt Carrier Reassembly 27Reassembly of OA-93 and OA-96 Series 29-31Function Check 32Exploded Views, Stock and Lower Receiver 33-34

THIS MANUAL covers all variants of the OA-93/OA-96 series, with sep-arate instructions for all three models. Look at the end of the recoil rodabove the muzzle to determine which instructions to follow.

OA-93 CarbineModel 1

OA-93 & OA-96Model 1

OA-93,OA-96 &Carbine Model 2

NOTE:The OA-93 series is an amorphous firearm, available in a variety of barrellengths and (depending upon federal restrictions) available with or with-out a folding stock. For these reasons, the terms pistol and carbine aresometimes used interchangeably in this manual.The OA-96 is a distinct sub-species of the OA-93 family. While it sharesmany parts and procedures with the OA-93 series, it is not available witha folding stock, it has no magazine release sub-assembly, and the maga-zine is pinned and welded in place. All items referring exclusively to theOA-96 are marked with a star ( * ) and boxed with a double rule.

Page 4: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

NOTE -8Magazine may be loaded with bolt assembly open orclosed.1. Place selector on SAFE.2. Insert loaded cartridge magazine in magazine well (*OA-96: see page 5

for loading instructions).3 .

4 .

5 .

6 .

7 .

8 l

9 .

Face the target, move the selector lever from SAFE to FIRE and bringyour weapon up to firing position.Aim your weapon at the target and squeeze the trigger.Squeezing the trigger releases the hammer, allowing it to impact thefiring pin, which strikes the primer in the round.The primer ignites the propellant in the round.Gas from the burning propellant pushes the projectile (bullet) along thebarrel of the weapon.The rifling in the barrel causes the projectile to rotate, which providesstability during flight to the target.When the round reaches the approximate end of the barrel, expandinggases from burning propellant pass out through the gas port and intothe gas tube. Gas goes into the bolt carrier assembly, ejects the old car-tridge, and chambers a new round.

Page 5: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operating instructionsDescription and Use of Operator’s Controlsand Indicators

offers checkered grip surface and keeps

Flash Suppressor (2) - reduces the amount of flash from muzzle whenweapon is fired.

Ejection Port Cover (3) - protects upper receiver from foreign matter whenweapon is not in use. Keep port cover closed when not in use.

Cartridge Magazine (4) - supplies ammunition to weapon.

*Magazine Catch Button (5) - releases cartridge magazine (4) fromweapon when pushed (not present on OA-96).

Lower Receiver (6) - provides firing control for the weapon.

Charging Lever (7) - cocks weapon when preparing to fire or clearingweapon, and is ambidextrous.

when the last round is fired.

Upper Receiver and Barrel Assembly (11) - directs the projectile upon fir-ing. Houses bolt carrier and recoil assembly.

Page 6: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

LoadingWARNING! Pointmuzzle in asafe direction

1. Pull charging lever assembly (1) rearward, lock bolt (2), and releasecharging lever. Place selector lever (3) on SAFE.

2. Pull charging lever assembly (1) rearward and check to see that chamberis clear. Release charging handle assembly.

NOTE:Magazineor closed.

may be loaded with bolt assembly open

3. Push upward on cartridge magazine (3) until magazine catch (4) engagesand holds cartridge magazine.

4. Tap upward to make certain cartridge magazine is correctly seated.

Page 7: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

*Loading -WARNING! Point muzzlein a safe direction1. Pull charging lever assembly

(1) rearward and check to seethat chamber is clear. Lockbolt (2), and release charginglever. Place selector lever (3)on SAFE. if the chamber is

2. Hold on to upper receiver, press release catch (4) and pivot upperreceiver up and forward. Cartridges may be inserted singly intomagazine well, or in groups of ten by using a stripper clip (5). Insertstripper clip guide (6) into slot behind mag well and press stripperclip down until top cartridge is below lip of magazine well. Removestripper clip guide.

Page 8: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operating ProcedureChambering and Firing a RoundBOLT ASSEMBLY OPEN

1. Depress upper portion of boltcatch (1) to release the bolt.

OLYMPIC ARMS F,O E 01

OLY WA USA ssk- A /

2. Check charging lever (2) to en-sure that bolt is fully forward.

3. Move selector lever (3) to FIRE. 4. Squeeze the trigger (4) and fire.

Page 9: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operating Procedure (continued)Chambering and Firing a RoundBOLT ASSEMBLY CLOSED

3. Release the charging lever (2).

4. Never “ride” the charging lever(2). Let it go on its own.

5. Move the selector lever (1) toFIRE.

6. Squeeze the trigger (3) and.fire .

Page 10: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operating ProcedureClearing Your OA-93(OA-96 Model - Page 12)

WARNINGTo avoid accidental firing, al-ways look into chamber afterclearing your weapon to makesure it does not contain a round.

1. Place selector lever (1) on SAFE.

NOTE: If weapon is not cocked,lever cannot be pointed towardSAFE.

2. Remove cartridge magazine (2)by depressing magazine catchbutton (3) and pulling cartridgemagazine (2) down.

3. To lock bolt open, pull charginglever (4) rearward, press bottomof bolt catch (5) and allow bolt tomove forward until it engagesbolt catch. Return charging lever(4) forward.

OLYMPIC ARMS F,:EO L Y W A U S A =

Page 11: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operating ProcedureClearing Your OA-93(OA-96 Model - Page 12)

NOTE:Ensure that selector lever ispointed toward SAFE. 06

4 .

5 .

Check receiver and chamber(6) to ensure these areas con-tain no ammunition.With selector lever (1) point-ing toward SAFE, allow boltto go forward by pressingupper portion of bolt catch (5) .

NOTEIf weapon is to be stored, it shouldbe dry-fired to release tension onhammer spring.

6. Place selector lever (1) on FIREand squeeze trigger to releasetension on hammer spring (makesure muzzle is pointed in a safedirection).

Page 12: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

1.

* Clearing your OA-96WARNING! Point muzzlein a safe direction

Pull charging leverassembly (1) rearward,lock bolt (2), and releasecharging lever. Placeselector lever (3) onSAFE.

2. Press release catch (4) and pivot upper receiver up and forward.Cartridges may be stripped out of the magazine well with yourthumb.

Page 13: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Operation Under UnusualConditionsNOTEUnusual conditions are defined as any climaticcondition requiring special maintenance of thisweapon.Perform the maintenance outlined for the climatethat most applies to your operational area.

Hot, dry climates are usually dusty and sandy areas. They are hot during day-light hours and cool during the night hours.

A. Dust and sand will get into the weapon and will cause malfunctions andexcessive wear on component working surfaces through abrasive actionduring the firing operations.

B . Corrosion is less likely to form on metal parts in a dry climate; therefore,lubricate internal working surfaces only with a small application of clean-er, lubricant and preservative (always shake CLP prior to use). Do notlubricate external parts of the weapon. Doing so will only collect dustand sand, making it more difficult to keep the OA-93/OA-96 clean. Donot lubricate internal components of the magazines, or the magazine wellon the OA-96.

C. Using additional equipment - i.e., protective cap and spare magazineprotective bags and overall protective cover will help keep dust and sandfrom getting into the OA-93/OA-96. Use these items as the situation war-rants. As a minimum precaution to keep dust and sand out of yourweapon, keep the ejection port cover closed, a cartridge magazineinstalled, and a muzzle cap on your OA-93/OA-96.

NOTE: Before firing, remove the protective cap and keep for later use.However, it is not dangerous to fire the weapon with the protective cap inplace; the cap will blow off when the first round is fired and may be lost.

HEAVY RAINPerform maintenance according to the appropriate climatic condition. Useadditional equipment - protective cap and spare magazine, protective bagsand over-all protective cover as the situation warrants. Always keep theOA-93/OA-96 dry. Using the protective cap will help keep water out of thebarrel. Always drain any water from the barrel before firing. Dry the borewith a swab and cleaning rod, if necessary

Page 14: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresField-stripping YourWARNING: To avoid accidentalfiring, be sure weapon is clear. Pullback charging lever (1) and checkchamber (2). Place selector lever on

1. Remove sling (3), if any.2. Remove rear knurled locking

nut (4), using a large standardscrewdriver.

3. Push out rear locking pin (5).4. OA-93 series: Push out take-

down pin (6) as far as it will go

and pivot upper receiver awayfrom lower.

*OA-96: press release buttonon the butt of the lowerreceiver to pivot upperreceiver away from the lower.

OA-93 Carbine Model 1: continued next page l OA-93/OA-96 Model 1:go to page 16 l OA-93/OA-96 and Carbine Model 2: go to page 17

Page 15: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

PLEASE NOTE: The recoil assembly on the OA-93 Carbine Model 1 dif-fers from the assembly on the OA-93/OA-96 Model 1. Look at the recoilrod end above the muzzle to determine which instructions to follow.

44 8OA-93 Carbine OA-93 & OA-96 OA-93/OA-96 &

Model 1 Model 1 Carbine Model 2

Maintenance ProceduresField-stripping Your OA-93 Carbine Model 1

5 .

6 .

7.

Grasp knurled recoil rod lock-ing pin (7) and pull out untildetent pin (8) clears slot inrecoil plug, then twist so thatdetent pin rests clear of slot.Grasp recoil plug (9) by the flatedges and unscrew from recoilrod (10).Lift access hatch (11) at rear ofscope mount.

8l

9 .

Slide out bolt carrier and recoilassembly (12).Drop bolt carrier, carrier keyand linking pin (13) free ofrecoil assembly.

Page 16: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

MaintenanceOA-93/OA-96 Model 1Continued from page 14

1. Using a hex wrench,

2. Using a large standard screwdriver,remove front knurled locking nut (2), andpush out front locking pin (3). Note that for-ward pin is radiused on the side facing up, whilethe rear pin is not.

3. Slide off scope mount base (4).

4. Using a propane torch, appheat to the linking pin (4) tosoften the Red Loctite® used inassembly, then unscrew thelink pin from the bolt carrierkey (5).

Page 17: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresOA-93/OA-96 Model 1Field-stripping Your OA-93/OA-96 Model 1

assembly out of therear of the upperreceiver.

GO TO PAGE 20, STEP 2

NOTE: the recoil assembly is under constant tension. Do not attempt toremove the recoil rod link. If you must remove it, be aware that thespring and recoil rod will shoot out violently when the block is removed.

Maintenance ProceduresOA-93/OA-96 and Carbine Model 2Field-stripping Your OA-93/OA-96 & Carbine Model 2

Continued from page 14

1. Using a hex head wrench, back off the recoilrod set screw (1) a couple of turns.

GO TO PAGE 19

Page 18: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

No.1234567891011121314151617181920

Description Stock No.Scope Mount Nuts OA-0007Scope Mount Screws OA-0006Charging Screw OA-0008Charging Screw Sleeve OA-0009Charging Lever Block OA-0010Recoil Rod Link OA-0012Link Pin (max all) OA-0011Scope Mount Base OA-0005Ejection Cover AR32Ejection Cover Hinge Pin AR34Ejection Cover Hinge Pin Clip AR35Ejection Cover Spring AR33Bolt Carrier OA-0015Bolt Carrier Key OA-0016Bolt T-26Bolt Cam Pin AR16Firing Pin AR39Firing Pin Retaining Pin AR40Upper Receiver OA-0003Ejector AR28

No.2122232425262728

*2930313233343536

*37*38*39

40

Description Stock No.Ejector-SpringEjector Roll PinFlash Suppressor WasherBrennan Nil-FlashVortex Flash SuppressorHand GuardBarrelRecoil SpringRecoil Rod (2-part)Bolt Carrier Key ScrewGas TubeGas Tube Roll PinSling SwivelSling Swivel PinSling Swivel StudRecoil Spring HousingRecoil Rod Locking PinDetent PinLocking Pin SpringFront sight taper pins

AR30AR31AR42F2-EF2-C

OA-0018OA-0017OA-00 14OA-0013

AR6OA-0019

AR62AR85AR86

OA-0004OA-0022OA-0023OA-0024OA-0025

AR59

§41 Bolt carrier TCP (auto) OA-0015-A42 9mm bolt AR3-9

†43 Recoil rod (model 1) OA-0026 * Parts exclusive to OA-93 Carbine‡44 Recoil rod (model 2) OA-0027 † Parts exclusive to OA-93/OA-96 Model 1‡45 Recoil rod nut OA-0028 ‡ Parts exclusive to OA-93/OA-96 Model 2‡46 Recoil rod set screw OA-0029 § Parts exclusive to OA-93 TCP

Page 19: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresOA-93/OA-96 and Carbine Model 2Field-stripping Your OA-93/OA-96 & Carbine Model 2

2. Remove the recoil rod locking nut (2). If youhave difficulty gripping the nut, insert a smallhex wrench into the takedown hole (3). BECAREFUL. The recoil spring will shoot out theend of the housing as soon as the nut isremoved. Maintain pressure and ease thespring tension gradually.

assembly out of therear of the upperreceiver.

GO TO PAGE 20, STEP 1

Page 20: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Bolt Carrier DisassemblyNOTE: The following illustrationsshow the link pin removed fromthe bolt carrier key. If you are dis-assembling an OA-93/OA-96Model 1, the link pin must beremoved. It is not necessary toremove it on the OA-93/OA-96Model 2, or the OA-93 Carbine.The only time you must removethe link pin on these models iswhen you wish to remove the boltcarrier key from the bolt carrier.To remove the link pin: use apropane torch to apply heat to thebase of the link pin (1) to softenthe Red Loctite used in assembly.Use a standard screwdriver tounscrew link pin from bolt carrierkey. BE CAREFUL NOT TO BURNYOURSELF ON THE HOT LINKPIN - use a pair of heavy glovesfor this step.

2. Move bolt assembly (6) forwardto unlocked position andremove firing pin retaining pin(7). Do not open or close splitend of firing pin retaining pin(7).

3. Push in on bolt assembly (6) toput in locked position.

4. Catch firing pin (8) as it dropsout of rear of bolt carrier assem-bly (9).

cedures

\06

Page 21: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresBolt Carrier Disassembly5. Give bolt cam pin (5) a quarter-

turn and lift out.

6. Remove bolt assembly (2) frombolt carrier assembly (1).

NOTE: Disassemble extractor and .

7.

8 .

spring assembly only whendirty or damaged.

Press top of extractor (6) to checkthat spring works.

Use dummy round or ballpoinpen to remove extractor pin (7).

CAUTION: Do not separate insertfrom spring assembly (9).

9.

10

Remove extractor (8) and springassembly (9). Do not removespring assembly (9) from extrac-tor (8).

Reassemble in reverse order. Besure to use Red Loctite when install-ing flash suppressor (if removed)and link pin (#1, page 20).

Page 22: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresCleaning and LubricatingUpper Receiver and Barrel AssemblyNOTE: Do not reverse direction of the bore brush while it is in the bore.Use cleaner, lubricant and preservative (CLP) on the following areas:A .

B .C .D .

1 .

2.

Use cleaning rod, bore brush and CLP. Run rod through chamber, barrel(1) and flash suppressor (2).

Install chamber brush on cleaning rod, dip in CLP, and insert in chamber(4) and locking lugs (5). Clean by pushing and twisting cleaning rod.

Page 23: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Cleaning and LubricatingUpper Receiver and Barrel

3. Lightly lubricate bore andchamber, outer surface of barreland recoil spring tube, and sur-faces under hand guards.

4. Lubricate locking lugs (3).

Assembly

NOTE: Do not over-lubricate your OA-93/OA-96. Excess oil will attract dirtand grit, and lead to excessive wear. Wipe off excess before reassembling.

Maintenance ProceduresCleaning and Lubricating Bolt Carrier AssemblyCAUTION: Do not use firing pin to clean inner surfaces of bolt or bolt car-rier assembly.

1. Clean all parts and outer sur-faces of the bolt carrier assembly(1) with a swab saturated with

3 .

4.

Remove carbon deposits and dirtfrom locking lugs (3) with borebrush dipped in CLP.

Clean areas behind bolt rings (4)and under lip of extractor (5).

2. Clean the bolt carrier key (2)with a worn bore brush dippedin CLP. Dry with a pipe cleaner.Use a pipe cleaner to apply alight coating of CLP to carrierkey.

5. Inspect firing pin retaining pin(6) for bends, breaks, or dents.

Page 24: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresCleaning and LubricatingBolt Carrier Assembly (Continued)

Inspect bolt assembly (7) for 0%7cracks and fractures, especiallyin the cam pin hole area.

Inspect bolt cam pin (8)cracks or chips.

Inspect firing pin (9) forcracks, or blunted tip.

LUBRICATION W

1.

2.

3.

4

Lightly lubricate firing pin (1)and firing pin recess (2) in boltassembly.

Generously lubricate outside ofbolt cam pin (3) and firing pinretaining pin (4) with CLP. Makecertain to lubricate bolt assemblycam pin hole (5), bolt rings (6),and outside of bolt assembly (7).

Dry the inside of the bolt carrierkey (8) with a pipe cleaner, andplace one drop of CLP insidekey.

Lightly lubricate with CLP theinner and outer surfaces of thebolt carrier assembly (9). Gener-ously lubricate the slide (10) andcam pin area (11) of bolt carrierassembly.

Page 25: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresCleaning and Lubricating the Lower ReceiverNOTE: The lower receiver should only be disassembled by aqualified gunsmith. If you need to do repairs on your lowerreceiver, write to Olympic Arms and request part number H-7,U.S. Marine Corps Technical Manual (TM 05538C-23&P/2).

CAUTION: Do not use a steel orwire brush or any type of abra-sive material to clean aluminum

Wipe dirt from trigger (1) with a 4. Examine lower receiver for cor-swab. rosion or damage. Also check for

Use a swab dipped in CLP and acleaning brush to clean powderfouling, corrosion and dirt fromoutside parts of lower receiver.

Clean the inside of the lowerreceiver (2) with a swab dippedin CLP. Wipe dry.

5.

broken or bent trigger (l), bentor damaged selector lever (3), orany cracks, dents, or breaks. Ifyou think the parts are bad, see areputable gunsmith.

Lightly lubricate inside of lowerreceiver with CLP. Generouslylubricate takedown (5) and pivotpins (4) with CLP.

Page 26: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresBolt Carrier Assembly

NOTE: New extractor has siliconeinsert with spring. Be carefulnot to lose it.

If the spring comes loose, seatthe large end of spring in theextractor.

Insert extractor (1) and springassembly (2) into bolt.

Push extractor (1) and springassembly (2) down. Align hole(3) with hole in bolt and insertextractor pin (4).

4. Stagger gaps in bolt rings (5) tostop gas loss. (Pistol caliberbolts have no gas rings).

WARNING: Don’t switch boltassemblies between weapons.

5 .

6.

Slide bolt assembly (6) into boltcarrier assembly (7).

Insert bolt cam pin (8) and give ita 1/4 turn.

=05

Page 27: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresBolt Carrier Assembly

7. Drop firing pin (9) into openingand seat.

8. Push bolt assembly (6) back and re-place firing pin retaining pin (10).

NOTE: Firing pin (11) should not fallout when bolt carrier assembly isturned upside down.

9. Turn bolt carrier assembly (7) overand try to shake out the firing pin.

Page 28: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

Maintenance ProceduresOA-93 Carbine Model 1 Reassembly

If for any reason you unscrewedthe link pin from the bolt carrierkey, replace it now. Place onedrop of Red Loctite® in the for-ward hole (1) and screw in linkpin (2) firmly.

insert link pin (2) into recoil rod link (6).

(If assembly binds, try turning your OA-93/OA-96 upside down.

REA OFETAIL

3. Screw forward part of recoil the pin drop into the slot onrod (7) firmly onto rear part of the end of the rear recoil rod.recoil rod (8). 5. Turn locking pin (10) until it

4. Pull out and turn detent pin snaps into the groove on the(9) until you feel the paddle of end of the recoil rod.

GO TO PAGE 31

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Mahtenance ProceduresOA-93/OA-96 Model 1 Reassembly

1. Turn upper receiver upside downand slide in bolt carrier assembly (1).

2. Align holes inrecoil rod link (2)and bolt carrier

and press through ret(2). Screw firmly into

3. Slide on scope mount base (5). charging screw sleeve (9).Push in scope mount screws Apply blue Loctite® to the(6), making sure that the for- threads of the charging screwward screw has radiused side and fasten assembly to charg-facing upward. Tighten down ing lever block with a 5/32”scope mount nuts (7) with hex head wrench. NOTE: Thislarge standard screwdriver. assembly is ambidextrous,NOTE: These screws are and can be attached to eitherambidextrous, and can be side of the charging leverinserted from either side. block.

4. Slide charging screw (8) into 5. Re-attach sling (10), if any.

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OA-93/OA-96 & Carbine Model 2 ReassemIf for any reason you unscrewedthe link pin from the bolt carrierkey, replace it now. Place onedrop of Red Loctite® in the for-ward hole (1) and screw in linkpin (2) firmly.

1 .

2 .

3 .

insert link pin (2) into recoil rod link (4).Lift access hatch (5) and slide in bolt carrier assembly (6). U,

(If assembly binds, try turning your OA-93/OA-96 upside down).

Use the recoil rod nut (7) to__ e .-.

compress the spring into thea I .recoil spring housing andscrew it down. If you have

Maintenance Procedures

difficulty gripping the nut,insert a small hex wrench intothe takedown hole (8). BECAREFUL. The recoil springwill shoot out the end of thehousing if pressure is removed.

II P

8

4. Tighten down the recoil rod setscrew (9).

GO TO PAGE 31 II I

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Maintenance ProceduresOA-93/OA-96 Final Reassembly ALL MODELS

OLY WA USA

OA-93/OA-96 Model 2 andOA-93 Carbine only: Insertrear scope mount screw (1) andtighten down scope mount nut(2) with large standard screw-driver.

*OA-96: Close upper receiveron lower receiver.

3 .

Move selector lever (3) toSAFE, and close ejection portcover (4) before closing upperreceiver.

4 .

OA-93 All Models: Join upperreceiver (5) and lower receiver(6). Align the pivot pin holesand push pivot pin (7) in.Close upper receiver and lowerreceiver. Push in takedown pin(8).

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Maintenance ProceduresFunction Check

WARNING: To avoid accidental firing,

-1

1.

be sure cartridge magazine is re-moved and chamber is clear.

charging screw (I) to rearrelease. Place selector lever (2)SAFE. Squeeze trigger (3). Hammershould not fall.

OLYMPIC ARMS F,'EO L Y W A U S A 0

01

SAFE A /0

/0 2

andon

2. Place selector lever (2) on FIRE.Squeeze trigger (3). Hammer shouldfall. Hold trigger to the rear. Pullcharging screw (4) to rear and re-lease. Release trigger (3). You shouldhear a click as you release the trigger.Squeeze again; hammer should fall.

Page 33: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing

No. Description Stock No.1 Lower Receiver OA-00012 Pistol Grip Screw AR723 Grip Screw Washer AR734 Pistol Grip A-2 AR71A5 Safety Spring AR846 Safety Detent AR837 Trigger AR918 Trigger Spring AR949 Trigger Pin AR6410 Hammer Pin AR6411 Trigger Guard AR9212 Trigger Guard Roll Pin AR9313 Disconnector AR2614 Disconnector Spring AR2715 Takedown Pin AR8816 Takedown Pin Detent AR8917 Takedown Pin Detent Spring

AR90‡18 Magazine Catch Button AR70‡19 Magazine Catch Spring AR69‡20 Magazine Catch AR68

21 Bolt Catch AR722 Bolt Catch Plunger AR823 Bolt Catch Roll Pin AR924 Bolt Catch Spring AR1025 Safety Selector AR82

#2627

‡28‡29

‡30

‡31†32†33†34†35

Description Stock No.Hammer AR63Hammer Spring AR65Takedown Pin, Rear AR88Takedown Pin Detent, Rear

AR89Takedown Pin Detent Spring

AR905x40 Set Screw OA-0002Folding Stock Bolts OA-0030Folding Stock OA-0031Folding Stock Spacer OA-0032Locking Ring OA-0033

† Parts exclusive to OA-93Carbine only

‡ Parts exclusive to OA-93 pistol only -(not applicable to OA-96)

Page 34: OWNER’S MANUAL FOR OA SERIES FIREARMSpdf.textfiles.com/manuals/FIREARMS/olympic_oa.pdf · OA-93/OA-96 will rapidly raise the temperature of the barrel to a critical point. Firing