This new BCA AR15 in 450 Bushmaster (Thumper) has one 7 round ASC stainless magazine , 16" heavy barrel with custom BCA muzzle brake (40% reduced felt recoil) , mil-spec lower lower with 6 position adjustable stock, 15" MLOK barrel shroud, patented right side charge for easier operation with mounted optic ,and lifetime warranty from BCA. Insured shipping is $55.00 to the continental U.S. where allowed and no card fees added at Deals on Guns. BCA website; BC-15 | .450 Bushmaster Forged Rifle | 16" Parkerized Heavy Barrel | 1:24 Twist | Carbine Gas System | 15" MLOK | BCA Muzzle Brake |