I have a AR that I built and only fired 3 rounds through to make sure it works. I also painted it tan on Sunday. it has a spikes M4 upper with a chrome lined barrel with a 1/7 twist, and a 4 sided railed handguard, the lower is a CMMG lower and CMMG lpk was installed. it has a flip BUIS. here are some pics.I would like to trade it with cash for a M1a.