SIG SAUER 522 RECOIL SPRING KIT UPGRADE
SAFETY WARNING
Your SIG522 RECOIL SPRING KIT UPGRADE comes with all the necessary components and instructions to properly install this kit in your SIG SAUER 522 rifle. Failure to follow these instructions and properly install the supplied components can result in the improper function of your rifle.
Read these instructions and refer to your SIG SAUER 522 Owner’s Manual until you fully understand the procedures required to install these parts. If you have any doubts about your ability to complete the installation process you should seek guidance from a qualified gunsmith or contact SIG SAUER Inc.
EYE PROTECTION
Some parts used in this procedure are under spring tension. Proper safety glasses should be worn while performing this installation.
AMMUNITION
Keep all live ammunition out of the work area. Unload and clear your rifle prior to bringing it into the work area and beginning this installation.
To unload and clear your SIG SAUER 522 rifle: (Refer to owner’s manual section 5.0 on page 33).
1.Depress the magazine catch and remove the magazine if present.
2.Retract the charging handle and lock the bolt to the rear.
3.Rotate the fire control selector to “SAFE”
4.Visually and physically inspect the chamber to ensure it is clear of ammunition.
5.Release the bolt to its forward position.
Removing the bolt from the SIG522 rifle
1.Press the rear takedown pin from left to right until it stops at detent (It is captive and will not remove from the receiver).
2.Pivot the receiver s apart.
3.Retract the charging handle to its rearward most position exposing the buffer.
4.Pull the charging handle outward and remove the bolt.
5.Remove the retaining ring from your current bolt and remove the recoil guide rod and components.
Assemble the Recoil Spring Upgrade Kit
1.Using a hammer and a 1/16” roll pin punch drive the roll pin (#6) into the hole in the recoil guide rod (#1) until it is centered in the guide rod.
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