Bushmaster XM-15 QRC AR15 Complete Upper Assembly - Black | 5.56 NATO | 16" Barrel | A2 Flash Hider

MPN: BM-00-40003-BLK

• The ideal way to modify your gun, this upper receiver was developed to be an exceptional improvement to your build
• The 5.56x45 NATO caliber upper receiver is machined aluminum forgings 7075 with a salt bath nitride finish
• The A2 muzzle device is 1/2x28 with a 1:8 twist, the barrel is 16” in length and the receiver is optics ready
• The made in the USA, 25” overall upper receiver has a standard carbine gas system and a SBN MPI bolt carrier