Last night my brother in law came over to the house with his rifle kit that he'd bought locally that day. He's been wanting an AR for well over a year now and for him to get this package together was an accomplishment a long time in the making.
So anyway, we assemble the lower and he gets to see how everything works which was really good for him and really helped him understand how the rifle works. We went through everything, but the one thing I noticed and I didn't say anything to him because I didn't want to call his new baby ugly, was that the upper to lower fit would be loose & tighten & then loosen when rotating the two halves on the front pivet pin. Was it a big deal, no. Was it anything I've ever felt on any other AR-15, M4, or M16 I'd ever felt in my life, no. It wasn't bad, but I could feel that something just needed to be smoothed out.
I've never came across this issue and I wasn't sure if it was the upper (CMMG) the lower (PSA) or the actual fron pivet pin itself. In any case I put a dab of oil there and worked it a couple more times, but it didn't seem to do a whole lot.
Any suggestions?
So anyway, we assemble the lower and he gets to see how everything works which was really good for him and really helped him understand how the rifle works. We went through everything, but the one thing I noticed and I didn't say anything to him because I didn't want to call his new baby ugly, was that the upper to lower fit would be loose & tighten & then loosen when rotating the two halves on the front pivet pin. Was it a big deal, no. Was it anything I've ever felt on any other AR-15, M4, or M16 I'd ever felt in my life, no. It wasn't bad, but I could feel that something just needed to be smoothed out.
I've never came across this issue and I wasn't sure if it was the upper (CMMG) the lower (PSA) or the actual fron pivet pin itself. In any case I put a dab of oil there and worked it a couple more times, but it didn't seem to do a whole lot.
Any suggestions?