OWNER’S MANUAL FOR OA SERIES FIREARMS 620-626 Old Pacific Hwy SE Olympia, WA 98513 (360) 459-7940
WARNING To avoid accidental firing, BE SURE WEAPON IS CLEAR. Failure to do so could 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-96 can still fire and will explode, causing injury or death. DO NOT exchange or switch bolt assemblies from one OA-93/OA-96 to another. It could cause damage to both you and your weapon. DO NOT attempt to install a standard AR-15 or M-16 bolt or bolt carrier in your OA93/OA-96.
TABLE OF CONTENTS Technical Principles of Operation, OA-93 and OA-96 Series Operating Instructions Description and Use of Operator’s Controls Loading Chambering and Firing Clearing Operation under Unusual Conditions Field Stripping - OA-93 /OA-96 All Models OA-93 Carbine Model 1 OA-93/OA-96 Model 1 OA-93/OA-96 & Carbine Model 2 Exploded Views, Upper Receiver Bolt Carrier Disassembly Cleaning and Lubricating Upper Receiver and Barrel Assembly Bolt Carrier Assembly Lower Receiver Bolt and Bolt Carrier Reassem
NOTE 8 Magazine may be loaded with bolt assembly open or closed. 1. Place selector on SAFE. 2. Insert loaded cartridge magazine in magazine well (*OA-96: see page 5 for loading instructions). 3 . Face the target, move the selector lever from SAFE to FIRE and bring your weapon up to firing position. 4 . Aim your weapon at the target and squeeze the trigger. 5 . Squeezing the trigger releases the hammer, allowing it to impact the firing pin, which strikes the primer in the round. 6 .
Operating instructions Description and Use of Operator’s Controls and Indicators offers checkered grip surface and keeps Flash Suppressor (2) - reduces the amount of flash from muzzle when weapon is fired. Ejection Port Cover (3) - protects upper receiver from foreign matter when weapon 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) from weapon when pushed (not present on OA-96).
Loading WARNING! Point muzzle in a safe direction 1. Pull charging lever assembly (1) rearward, lock bolt (2), and release charging lever. Place selector lever (3) on SAFE. 2. Pull charging lever assembly (1) rearward and check to see that chamber is clear. Release charging handle assembly. NOTE: Magazine may be loaded with bolt assembly open or closed. 3. Push upward on cartridge magazine (3) until magazine catch (4) engages and holds cartridge magazine. 4.
*Loading - WARNING! Point muzzle in a safe direction 1. Pull charging lever assembly (1) rearward and check to see that chamber is clear. Lock bolt (2), and release charging lever. Place selector lever (3) on SAFE. if the chamber is 2. Hold on to upper receiver, press release catch (4) and pivot upper receiver up and forward. Cartridges may be inserted singly into magazine well, or in groups of ten by using a stripper clip (5).
Operating Procedure Chambering and Firing a Round BOLT ASSEMBLY OPEN 1. Depress upper portion of bolt catch (1) to release the bolt. OLYMPIC ARMS F,O E OLY WA USA ssk- A 2. Check charging lever (2) to ensure that bolt is fully forward. 01 / 3. Move selector lever (3) to FIRE. 4. Squeeze the trigger (4) and fire.
Operating Procedure Chambering and Firing a Round (continued) BOLT 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) to FIRE. 6. Squeeze the trigger (3) and . fire .
Operating Procedure Clearing Your OA-93 (OA-96 Model - Page 12) WARNING To avoid accidental firing, always look into chamber after clearing your weapon to make sure it does not contain a round. OLYMPIC ARMS F,:E OLY WA USA = 1. Place selector lever (1) on SAFE. NOTE: If weapon is not cocked, lever cannot be pointed toward SAFE. 2. Remove cartridge magazine (2) by depressing magazine catch button (3) and pulling cartridge magazine (2) down. 3.
Operating Procedure Clearing Your OA-93 (OA-96 Model - Page 12) NOTE: 06 Ensure that selector lever is pointed toward SAFE. 4 . Check receiver and chamber (6) to ensure these areas contain no ammunition. 5 . With selector lever (1) pointing toward SAFE, allow bolt to go forward by pressing upper portion of bolt catch (5) . NOTE If weapon is to be stored, it should be dry-fired to release tension on hammer spring. 6.
* Clearing your OA-96 WARNING! Point muzzle in a safe direction 1. Pull charging lever assembly (1) rearward, lock bolt (2), and release charging lever. Place selector lever (3) on SAFE. 2. Press release catch (4) and pivot upper receiver up and forward. Cartridges may be stripped out of the magazine well with your thumb.
Operation Under Unusual Conditions NOTE Unusual conditions are defined as any climatic condition requiring special maintenance of this weapon. Perform the maintenance outlined for the climate that most applies to your operational area. Hot, dry climates are usually dusty and sandy areas. They are hot during daylight hours and cool during the night hours. A.
Maintenance Procedures Field-stripping Your WARNING: To avoid accidental firing, be sure weapon is clear. Pull back charging lever (1) and check chamber (2). Place selector lever on 1. Remove sling (3), if any. and pivot upper receiver away from lower. 2. Remove rear knurled locking nut (4), using a large standard screwdriver. *OA-96: press release button on the butt of the lower receiver to pivot upper receiver away from the lower. 3. Push out rear locking pin (5). 4.
PLEASE NOTE: The recoil assembly on the OA-93 Carbine Model 1 differs from the assembly on the OA-93/OA-96 Model 1. Look at the recoil rod end above the muzzle to determine which instructions to follow. OA-93 Carbine Model 1 44 OA-93 & OA-96 Model 1 8 OA-93/OA-96 & Carbine Model 2 Maintenance Procedures Field-stripping Your OA-93 Carbine Model 1 5 . Grasp knurled recoil rod locking pin (7) and pull out until detent pin (8) clears slot in recoil plug, then twist so that detent pin rests clear of slot.
Maintenance OA-93/OA-96 Model 1 Continued from page 14 1. Using a hex wrench, 2. Using a large standard screwdriver, remove front knurled locking nut (2), and push out front locking pin (3). Note that forward pin is radiused on the side facing up, while the rear pin is not. 3. Slide off scope mount base (4). 4. Using a propane torch, app heat to the linking pin (4) to soften the Red Loctite® used in assembly, then unscrew the link pin from the bolt carrier key (5).
Maintenance Procedures OA-93/OA-96 Model 1 Field-stripping Your OA-93/OA-96 Model 1 assembly out of the rear of the upper receiver. GO TO PAGE 20, STEP 2 NOTE: the recoil assembly is under constant tension. Do not attempt to remove the recoil rod link. If you must remove it, be aware that the spring and recoil rod will shoot out violently when the block is removed. Maintenance Procedures OA-93/OA-96 and Carbine Model 2 Field-stripping Your OA-93/OA-96 & Carbine Model 2 Continued from page 14 1.
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Stock No.
Maintenance Procedures OA-93/OA-96 and Carbine Model 2 Field-stripping Your OA-93/OA-96 & Carbine Model 2 2. Remove the recoil rod locking nut (2). If you have difficulty gripping the nut, insert a small hex wrench into the takedown hole (3). BE CAREFUL. The recoil spring will shoot out the end of the housing as soon as the nut is removed. Maintain pressure and ease the spring tension gradually. assembly out of the rear of the upper receiver.
cedures Bolt Carrier Disassembly NOTE: The following illustrations show the link pin removed from the bolt carrier key. If you are disassembling an OA-93/OA-96 Model 1, the link pin must be removed. It is not necessary to remove it on the OA-93/OA-96 Model 2, or the OA-93 Carbine. The only time you must remove the link pin on these models is when you wish to remove the bolt carrier key from the bolt carrier.
Maintenance Procedures Bolt Carrier Disassembly 5. Give bolt cam pin (5) a quarterturn and lift out. 6. Remove bolt assembly (2) from bolt carrier assembly (1). NOTE: Disassemble extractor and spring assembly only when dirty or damaged. . 7. Press top of extractor (6) to check that spring works. 8 . Use dummy round or ballpoin pen to remove extractor pin (7). CAUTION: Do not separate insert from spring assembly (9). 9. Remove extractor (8) and spring assembly (9).
Maintenance Procedures Cleaning and Lubricating Upper Receiver and Barrel Assembly NOTE: 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 . Use cleaning rod, bore brush and CLP. Run rod through chamber, barrel (1) and flash suppressor (2). 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.
Cleaning and Lubricating Upper Receiver and Barrel Assembly 3. Lightly lubricate bore and chamber, outer surface of barrel and recoil spring tube, and surfaces under hand guards. 4. Lubricate locking lugs (3). NOTE: Do not over-lubricate your OA-93/OA-96. Excess oil will attract dirt and grit, and lead to excessive wear. Wipe off excess before reassembling.
Maintenance Procedures Cleaning and Lubricating Bolt Carrier Assembly (Continued) 7 Inspect bolt assembly (7) for 0% cracks and fractures, especially in the cam pin hole area. Inspect bolt cam pin (8) cracks or chips. Inspect firing pin (9) for cracks, or blunted tip. LUBRICATION W 1. Lightly lubricate firing pin (1) and firing pin recess (2) in bolt assembly. 2. Generously lubricate outside of bolt cam pin (3) and firing pin retaining pin (4) with CLP.
Maintenance Procedures Cleaning and Lubricating the Lower Receiver NOTE: The lower receiver should only be disassembled by a qualified gunsmith. If you need to do repairs on your lower receiver, 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 or wire brush or any type of abrasive material to clean aluminum 4. Examine lower receiver for corrosion or damage.
Maintenance Procedures Bolt Carrier Assembly NOTE: New extractor has silicone insert with spring. Be careful not to lose it. If the spring comes loose, seat the large end of spring in the extractor. Insert extractor (1) and spring assembly (2) into bolt. Push extractor (1) and spring assembly (2) down. Align hole (3) with hole in bolt and insert extractor pin (4). 4. Stagger gaps in bolt rings (5) to stop gas loss. (Pistol caliber bolts have no gas rings).
Maintenance Procedures Bolt Carrier Assembly 7. Drop firing pin (9) into opening and seat. 8. Push bolt assembly (6) back and replace firing pin retaining pin (10). NOTE: Firing pin (11) should not fall out when bolt carrier assembly is turned upside down. 9. Turn bolt carrier assembly (7) over and try to shake out the firing pin.
Maintenance Procedures OA-93 Carbine Model 1 Reassembly If for any reason you unscrewed the link pin from the bolt carrier key, replace it now. Place one drop of Red Loctite® in the forward hole (1) and screw in link pin (2) firmly. insert link pin (2) into recoil rod link (6). (If assembly binds, try turning your OA-93/OA-96 upside down. REA OF ETAIL the pin drop into the slot on the end of the rear recoil rod. 5. Turn locking pin (10) until it snaps into the groove on the end of the recoil rod. 3.
Maintenance Procedures OA-93/OA-96 Model 1 Reassembly 1. Turn upper receiver upside down and slide in bolt carrier assembly (1). 2. Align holes in recoil rod link (2) and bolt carrier and press through ret (2). Screw firmly into 3. Slide on scope mount base (5). Push in scope mount screws (6), making sure that the forward screw has radiused side facing upward. Tighten down scope mount nuts (7) with large standard screwdriver. NOTE: These screws are ambidextrous, and can be inserted from either side. 4.
Maintenance Procedures OA-93/OA-96 & Carbine Model 2 Reassem If for any reason you unscrewed the link pin from the bolt carrier key, replace it now. Place one drop of Red Loctite® in the forward hole (1) and screw in link pin (2) firmly. 1 . insert link pin (2) into recoil rod link (4). U, . 2 Lift access hatch (5) and slide in bolt carrier assembly (6). (If assembly binds, try turning your OA-93/OA-96 upside down). __ 3 . Use the recoil rod nut (7) to e .-. compress the a spring I into .
Maintenance Procedures OA-93/OA-96 Final Reassembly ALL MODELS OLY WA USA OA-93/OA-96 Model 2 and OA-93 Carbine only: Insert *OA-96: Close upper receiver on lower receiver. rear scope mount screw (1) and tighten down scope mount nut (2) with large standard screwdriver. 3 . OA-93 All Models: Join upper receiver (5) and lower receiver (6). Align the pivot pin holes and push pivot pin (7) in. Move selector lever (3) to SAFE, and close ejection port cover (4) before closing upper receiver. 4 .
Maintenance Procedures Function Check WARNING: To avoid accidental firing, be sure cartridge magazine is removed and chamber is clear. -1 1. charging screw (I) to rear and release. Place selector lever (2) on SAFE. Squeeze trigger (3). Hammer should not fall. OLYMPIC ARMS OLY WA USA 0 F,'E SAFE A 01 / 0 2 / 0 2. Place selector lever (2) on FIRE. Squeeze trigger (3). Hammer should fall. Hold trigger to the rear. Pull charging screw (4) to rear and release. Release trigger (3).
No. Description Stock No.
