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9/22/2017 12:11:25 AM
Posted: 9/10/2005 6:18:57 PM EDT
The is a slight gap, and a little movement between the upper and lower reciver of my ar-15, Will this affect the rifle in any harmful manner? Also what is the best way to tighten them up?
Greatful for any help
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Link Posted: 9/10/2005 6:23:13 PM EDT
Get an accuwedge or you can make one out of a pencil eraser. Place it under the stud that the rear take down pin goes through.
Link Posted: 9/10/2005 10:52:31 PM EDT
Are you talking about the gap between the upper and the lower or a loose fit??

(ie. daylight through upper and lower connection or wiggling when assembled.)

If daylight, how much?? A little bit is fairly normal.

As for a loose connection between upper and lower recievers...I'm afraid you need an accuwedge.
Link Posted: 9/10/2005 11:01:24 PM EDT
My AR15 has a slight (less than 1/32") gap between the upper and lower, but it doesn't rattle (the front and rear pins hold it steady). From what I understand, even if the upper to lower fit is slighty loose, accuracy won't be affected much, as long as you line up your sight picture correctly.
Link Posted: 9/11/2005 5:46:12 PM EDT
The accuwedge works to take the play out, but not for good. They eventually stretch and do not really take up too much space after a while.
Link Posted: 9/11/2005 7:16:02 PM EDT
I would just leave it go. a slight gap will not cause any problems.

the funny ting about an ar is that you can have a sloppy fit between the upper and lower and have a 1/2 moa rifle. Where a m1a needs a bedded fit.
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