For Sale: Brand new, Never fired 450 bushmaster, XM-15 multi caliber lower, 20 inch 450 Bushmaster upper, Izzy Muzzle break, Battle Tested Equipment 2.5 pound trigger, Hogue grip, Rock River Arms Uni-Mount, Leupold VXII 3x12x50mm Scope, 4 Mags, 200 rounds of Hornady 250 grain FTX, 8 blue mag followers to turn any standard AR-15 mag. into 450. Sling and Hard case. I put this gun together for an Elk hunt I can no longer go on. $2500 or run your trades by me!