Routine maintenance is essential to keeping your Model 522 Viper firearm in top condition for years to come.
Cleaning, Lubrication and Maintenance
WARNING: This firearm should be checked periodically by the Remington Arms Company, Inc., or a REMINGTON RECOMMENDED GUNSMITH. This will insure proper inspection and any necessary replacement of worn or damaged parts.
NOTE: The chamber and bore should be cleaned before loading and firing the firearm the first time.
Over-lubrication should be avoided at all times. A thin coat of Rem Oil helps to prevent rusting. See note below.
WARNING: Excessive use of a non-recommended lubricant could cause serious function problems possibly leading to accidental firing.
When the firearm is to be stored, it should be carefully cleaned and thoroughly oiled. Outside surfaces should be wiped with a light coat of Rem Oil occasionally.
When the firearm is to be reused, all excess lubrication must be removed. The chamber and bore must be thoroughly wiped dry.
The chamber and and action must be cleaned periodically to prevent a misfire or gun malfunction.
NOTE: Remington Rem Oil with DuPont Teflon Lubricant is available from your local dealer. If your dealer is out of stock, ask him to order Rem Oil from his Remington distributor.
To Clean the Barrel:
WARNING: Check the chamber and magazine to make sure there are no cartridges in the firearm.
NOTE: Open the action lock the bolt open, and remove the magazine from the firearm.
- Use the instructions and equipment provided in a good cleaning kit. For recommendations, see your dealer or Remington Authorized Gunsmith.
- Select the correct caliber cleaning brush into a gun cleaning solvent.
- Push the cleaning rod through the barrel several times.
- Remove the brush from the rod, attach tip with cleaning patch, and push through the bore.
- Repeat several times, using a new cleaning patch each time until the patch is clean.
WARNING: After cleaning, make sure the barrel is free of obstructions.
To Disassemble the Firearm for Cleaning
CAUTION: The Model 522 Viper rifle should not be disassembled beyond what is described in this instruction book, except by a qualified gunsmith.
WARNING: Check the chamber and magazine to make sure there are no cartridges in the firearm. Always wear eye protection when disassembling and reassembling the firearm.
- Engage the safety switch.RED BAND WILL NOT SHOW.
- Pull the operating handle rearward and push it in to lock the bolt open.
- Push the magazine latch rearward and remove the magazine from the firearm.
- Remove the front and rear takedown screw, using a 1/8" Allen Wrench. See Picture 11.
- Lift and remove the action from the stock.
NOTE: The action has two (2) major parts, the receiver and the housing.
- Slide the receiver rearward slightly to disengage it from the housing. See Picture 12.
WARNING: Use extreme care when disassembling the receiver and housing as the bolt spring and firing pin spring are under tension. Wear eye protection to avoid serious personal injury.
- Rotate the receiver upward and slowly separate the receiver from the housing. See Picture 12.
To Clean the Receiver/Barrel Assembly:
- Remove the bolt spring and firing pin spring.
- Slide the firing pin carrier assembly rearward and out of the receiver.
- Unlock the operating handle and pull it fully rearward.
- Pull the operating handle upward and out of the receiver.
- Slide the breech bolt rearward and out of the receiver.
CAUTION: Do not disassembly further.
- Brush the inside of the receiver and end of the barrel with gun cleaning solvent and wipe dry. See Picture 13.
- Apply a thin coat of Rem Oil to the inside of the receiver and on the sear pivot pin. See Picture 13.
See Lubrication Warning on Page 10.
To Clean the Housing Assembly:
CAUTION: Clean the housing as a unit using Rem Oil. Do not remove any parts from the housing except as stated below.
- Slide the bolt spring guide and firing spring guide from the hub in the rear of the housing. See Picture 14.
- Use a small brush and clean the inside of the housing thoroughly with a cleaning solvent.
- Use a clean patch or rag to wipe the housing clean and dry.
- Apply a drop of Rem Oil to the trigger pivot pin area and safety switch spring hole. See Pictures 13 and 14.
To Clean the Breech Bolt:
- Clean the breech bolt using Rem Oil.
- Clean the bolt including the bolt face and firing pin slot thoroughly and wipe dry.
- Apply a drop of Rem Oil behind the extractor, and in the firing pin slot.
To Clean the Firing Pin/Carrier Assembly:
- Clean the firing pin/carrier assembly with Rem Oil and wipe dry. See Lubrication Warning.
To Clean the Magazine Assembly:
WARNING: Check to make sure there are no cartridges in the magazine box.
- Slide the magazine bottom forward and off of the magazine. As the spring becomes exposed, hold it with your thumb to prevent it from flying out.
WARNING: Use extreme care when removing the magazine bottom, as the magazine spring is under tension. Wear eye protection to avoid serious personal injury.
- Remove the magazine spring.
- Remove the magazine follower.
- Clean the magazine and follower and wipe dry.
- Reassemble the magazine follower into the magazine. Align the button on the magazine follower with the slot in the magazine.
- Insert the magazine spring into the magazine with the coils aligned as shown. See Picture 15.
- Position the magazine bottom onto the magazine. Push the magazine spring into the magazine and hold securely.
- Slide the magazine bottom rearward until the spring end snaps into the slot in the side of the magazine bottom.
WARNING: This firearm should be checked periodically by the Remington Arms Co., Inc. or a Remington Recommended Gunsmith. This will insure proper inspection and any necessary replacement of worn or damaged parts.
To Reassemble the Firearm:
WARNING: Check the chamber and magazine box to make sure there are no cartridges in the firearm.
CAUTION: Do not reassemble the firearm with the magazine box in place.
I. Receiver/Barrel Assembly:
- Slide the breech bolt into the receiver with the bolt face toward the barrel and the firing pin slot to the top so that it aligns with the rail in the top of the receiver.
- Rotate both sears so they do not block the breech bolt.
- Slide the bolt forward until the operating handle hole in the bolt aligns with operating handle slot in the receiver.
- Insert the operating handle through the receiver and into the breech bolt.
- Slide the breech bolt forward toward the barrel.
NOTE: Breech bolt must slide freely in the receiver with operating handle assembled.
- Slide the firing pin/carrier assembly into the receiver making sure that the firing pin aligns with and enters the firing pin slot in the breech bolt.
NOTE: Rotate both sears so they do not block the firing pin/carrier assembly.
- Place the firing pin spring into the hole on the operating handle side of the carrier. See Picture 16.
- Place the bolt spring through the other hole in the carrier and into the breech bolt. See Picture 16.
NOTE: The firing pin spring is identified by RED color coded wire. This marks the spring th match the RED spring guide in the housing assembly and the RED firing pin carrier. When properly assembled, the springs will show approximately the same length.
II. Housing Assembly:
- Place the RED spring guide into the slot in the right side of the hub at the rear of the housing.
- Place the BLACK spring guide into the slot in the left side of the hub at the rear of the housing.
NOTE: If you try to insert the spring guides in reverse order you will notice that the spring huides are different and will not assemble properly in the wrong slots.
III. Receiver and Housing:
- Align the receiver to the housing. Start the bolt spring and the firing pin spring onto the spring guides. See Picture 17.
NOTE: Remember the 3-R's. The RED spring goes on the RED spring guide in the RIGHT side of the receiver.
- Slide the receiver rearward toward the housing until the rear of the receiver closes up on the hub on the housing.
NOTE: Start the receiver rearward at a slight angle to ensure that the sears clear the magazine guide and ejector. Use the receiver assembly aid to guide the receiver assembly into the housing assembly. See Picture 17.
CAUTION: If the receiver assembly aid is damaged or broken return the firearm to the factory or a REMINGTON RECOMMENDED GUNSMITH.
- To ensure that the secondary sear is functioning properly pull operating handle rearward 1/4 inch and release the handle. The firing pin carrier, when properly assembled, WILL NOT contact the rear of the bolt assembly. See Picture 18.
- The front of the receiver must lock into the notch in the housing. This will keep both assemblies together while you assemble the stock.
IV. Action to Stock Assembly:
- Assemble the action into the stock.
NOTE: The safety switch must be engaged. RED BAND WILL NOT SHOW.
- Insert the front and rear takedown screws.
NOTE: Longer takedown screw goes to the back of the trigger guard.
- Tighten both screws, using a 1/8" Allen Wrench, until both screws are snug. Do not over-tighten.
- Pull the operating handle rearward and lock the bolt in the open position.
- The magazine may be placed back into the firearm. If the magazine is NOT in the firearm, the magazine disconnect will prevent the firearm from firing.