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Posted:  12/30/2008 4:46 PM #10163
Papa Jim


Joined: 12/28/2008
Posts: 9
Last Post: 12/31/2008
Subject: Pistol grip removal
I am a newb at customizing weapons, but not at shooting. I got an ergo grip to replace the standard one for my Bushmaster. The attaching bolt is not a screw or even an allen's bolt. I do not recognize it at all. Any ideas on what kind of tool is needed? It looks sorta like a socket but is surrounded on the outside by lots of little shiny beads or prongs.
"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." Ben Franklin

Posted:  12/30/2008 7:24 PM #10164
Jeffrey


Joined: 7/19/2007
Posts: 488
Last Post: 12/18/2009
What you are seeing is a standard 3/16 allen screw with an external tooth "star" lock washer under it like this. Since the washer is wider than the screw, it protrudes a bit.

http://www.happcontrols.com/tools/35026000.htm

Just use an extra long 3/16 allen wrench. "T-handle" style works great. Be mindful of the tiny spring underneath the grip that's for the safety selector and its even smaller pin that stands on it.
When was the last time you went to the range?

Posted:  12/31/2008 4:38 PM #10166
Papa Jim


Joined: 12/28/2008
Posts: 9
Last Post: 12/31/2008
Hah, thanks Jeff. Like I said, newb. I looked at it in better light and could make out the internal edges. Got it swapped out already. Thanks
"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." Ben Franklin

Posted:  12/31/2008 10:47 PM #10167
mrjctx


Joined: 12/28/2008
Posts: 8
Last Post: 3/26/2009
Papa Jim-Hah, thanks Jeff. Like I said, newb. I looked at it in better light and could make out the internal edges. Got it swapped out already. Thanks

If anyone else out there is swapping out their grips keep in mind that there is a compressed spring and damper (buffer) underneath the grip where it meets the lower receiver. Don't forget to collect these and put them back while you swap out your grip. Otherwise you will have problems with your fire selector.

As for the screw, I have seen run into two types of screw heads.
1. Allen
2. Flat head

Underneath both screws was a lock washer that you mentioned in your previous message.

*Please visit my site to watch me build my AR15.

Happy New Year!
JC
Watch me build my own AR15. Photos and pictures will include vendors and special prices or deals. Also available fishing hot spots, and motorcycle hangouts. http://www.Lucky4Sure.com

Posted:  4/6/2009 5:53 PM #15074
BikerBen4


Joined: 3/26/2008
Posts: 4268
Last Post: 9/11/2012
Here's an article we have on our website that explains the process in detail:

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.
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