How to Change a Pistol Grip
First, ensure that the gun is unloaded and flip the gun upside down. You will see a screw on the inside of the grip. Most grip screws require the use of either a 3/16” hexagonal wrench or a flat-head screwdriver. Which one you have will depend on who manufactured your AR. You can find both of these tools in the Precision Screwdriver Bit set, the Pachmayr Gunsmith Tool Kit, or the Wheeler Professional Gunsmith Screwdriver set.
Second, remove the screw, and slowly remove the pistol grip. You will notice a small spring. Hold the spring in place and remove the pistol grip. Carefully turn the rifle upright, and slowly remove the spring and selector detent pin that will follow. This small pin and spring are necessary to the safe operation of your rifle. Don’t loose them! You can now remove the grip screw and the lock washer from the old grip and insert them into the new grip.
Once you have done all of this, you are ready to install your new grip. Make sure that you have the selector detent pin and spring installed in the appropriate hole at the bottom of the receiver. Make sure that the new grip is facing forward and screw it onto the receiver with the grip screw and lock washer. While doing this, make sure that the selector spring feeds properly into the small hole in the grip and doesn’t get bent.
Once you get this done, you should function-check your rifle to make sure everything is working correctly. This can be done by verifying that the selector is able to move from “safe” to “fire” and clicks into place. It should not go past the “safe” or the “fire” positions. With the selector on “safe,” ensure the hammer is not released when the trigger is pulled. With the selector on “fire,” verify the hammer is released when the trigger is pulled.
Some of our choices for replacement grips include the Mako AR Ergonomic Folding Pistol Grip, the Hogue AR Rubber Pistol Grip, the Ergo Grip AR SureGrip Kit, and the Panther Tactical AR Grip.