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Old 09-11-2009, 12:19 PM
av8or17 av8or17 is offline
Join Date: Jul 2008
Location: Madisonville, LA
Posts: 597
Help - Broken Screw in YHM Flip Front Sight

I'm having trouble removing a browen screw in my YHM flip front sight on my AR15. No picture at present but can upload one later today if necessary.

The sight is a two-piece (gas block) sight that connects with four cap screws. I've completely removed the sight from the rifle.

The broken screw is lodged in the upper portion of the sight. It's broken off flush with the bottom of the sight and only a few millimeters of the screw extend above the top. The screw was locked in about six months ago with blue loctite. I've tried to use needle nose and regular pliers to turn the screw with no success. I've heated it and used WD-40 in attempts to losen it - didn't work.

A local gunsmith says $80 to drill it out and repair. Seems a little high. I can get a new replacement sight (same model) for $90.

Any words of advice or suggestions to remove the screw are greatly appreciated. Thanks!

Last edited by av8or17; 09-11-2009 at 12:28 PM.
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Old 09-11-2009, 12:25 PM
Todd C Todd C is offline
Join Date: Mar 2004
Posts: 645
Try vise-grips. Even if you have to grind the tip to get a grab at what is left standing.
Try drilling it from the back side (the clean side...not boogered up from pliers.) Many times when you get almost through, the drill will catch on the screw and drive it out the other side.
The good news is if you muck it up totally you are only out 90 bucks.
Polymer is PLASTIC. Steel is REAL!
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Old 09-11-2009, 12:31 PM
av8or17 av8or17 is offline
Join Date: Jul 2008
Location: Madisonville, LA
Posts: 597

Don't know if I can get vice gprips to grab enough of the screw but I'll give it a try. If not, I guess I'll try the drill.
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