I have a 6.8 spc upper for Sale. I had my local gunsmith build this with the intention of doing a hunting AR pistol. Honestly I have so many hunting rifles that I never got around to using it for this purpose. Its mostly been sitting collecting dust. The upper has 36 rounds through it. I am asking $650+ shipping Usps money order or PayPal F&F. I'll list the parts below. (6/21/2020) Now $600+ shipping (6/24/2020) Now $575+ shipping (6/29/2020) Now $560 + shipping 10.5 inch AR performance 3R 4150 CMV barrel Surefire Socom muzzle device Geissele Super charging handle Original Bushmaster (Windham,Maine) upper reciever Original Bushmaster ( Windham, Maine) Bolt carrier 6.8 spc AR performance enhanced bolt Vortex Strike Eagle 1-6 in a Burris AR-P.E.P.R mount. BCM MCMR M-Lok rail.