After recently installing a quadrail and VFG on my Bushie I have noticed a slight rattle between the upper and lower.
I guess this is a common occurance as the ability to place different uppers and lowers together requires some play on the pin holes.
The three solutions that I see are:
1. Deal with it - Various people say it really does not adversely affect accuracy and is more of an annoyance.
2. Buy a Tension Pin - This seems to be common but a hex wrench is needed for breakdown
http://www.jprifles.com/buy.php?item=JPTP-1
3. Buy an Accu Wedge - This also seems to be common and seems like an inexpensive fix.
http://www.bushmaster.com/shopping/lowers/acu1b.asp
I would like any feedback on these solutions as the rattle is an annoyance to me but I may just deal with it if neither solution are worth it.