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Old June 4, 2011, 09:44 PM   #1
Aguila Blanca
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Location: CONUS
Posts: 7,730
AR-15 question

Can someone tell me what the thread size and pitch is for the single screw that attaches the pistol grip to the lower receiver on an AR-15? And what length screw is required?

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Old June 4, 2011, 10:02 PM   #2
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I cannot give you a perfect answer.I expect you need the screw and you want to go to the hardware store instead of ordering from Midway.I do not have a drawing,and I don't have a spare screw for one.I think if you go get a 1/4-28 by 1 in,and a 1/4-28 by 1 1/4 in,you can get it done.Now,there may be a metric designation,I can't say.Do not force it if it does not feel right.Get a slotted pan head Put a little blue loctite on.You could use a button head,but if your allen socket rounds out it will be ugly.
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Old June 4, 2011, 10:13 PM   #3
Hunter Customs
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My AR has a 1/4x28, however to my understanding some AR's have a 1/4x22.
I believe the screw in mine is 7/8 inch long.
Best Regards
Bob Hunter
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