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Old 02-23-2012, 01:45 PM   #59 (permalink)
Chris Sexton
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Here is what I would do:

Take the arm off the grip. Run the M4 bolt through the grip without the arm to see if it will EASILY pass through all of the threads. If you have any damaged threads, the screw will require a bit of effort to bottom out. If the screw bottoms out without any issue, loctite and go about your day. If you encounter any resistance or it won't bottom out, get a new grip.

If you know anyone with a M4 tap, that would be the best way, run a tap through gently to make sure threads are clean.
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