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I seem to have a little bit of play between my upper and lower...I seen and heard of a Wedge to place in the lower behind the Take Down Pin.. I've also heard mention of an O-ring...Are either one worth the trouble or should I just live with it? I know that either option will not affect shooting, but its more of a confidenve thing...ANY INPUT ???????
Try an o ring, then if it's still sloppy, swap the o ring for the wedge.
My rifle had slop and I went straight for a wedge (given to me). Now it's VERY tight. Good and bad comes from it.
Where do you put the O ring?
On the rear lug of the upper
Upper-lower slop has no effect on accuracy. I suppose an extreme amount would, but by the time you'd probably have other worries.
Orange foam ear plug is all you need. I just live with it
If you do decide to tackle this 'problem', make sure that whatever you put in there is not going to go flying into your FCG at a random and inappropriate time.
JB Weld!
Upper and lower play is somewhat common and does have the potential to mess with accuracy but not likely.
Spend $5 and get yourself an Accu-Wedge and be done with it.
https://www.google.com/#q=accu+wedge
Noah at Ark Tactical has them in stock I believe
I bought a seekins billet lower and it has an adjustment screw for lower to upper retention. All my other rifles have the "play" and I just live with it. It does kind of suck when you buy a noveske lower, VLTOR upper and put them together to have a little wobble. Oh well.