Ruger, Ar-556 Multi Purpose Rifle 8522, 450 Bushmaster, 18.63 inch, 5+1, Hard Coat Anodized

The Ruger 8522 AR-556 MPR 450 Bushmaster brings Ruger's AR-556 multi-purpose rifle series to the hard-hitting .450 Bushmaster platform, combining a durable Type III hard coat anodized 7075-T6 receiver set with an 18.63" cold hammer-forged 4140 chrome-moly barrel featuring 5R rifling and a 1:16" twist to stabilize 170—260 grain bullets for hunting medium to large game. The free-floating 15" M-LOK handguard and Magpul MOE grip with MOE SL collapsible stock on a Mil-Spec buffer tube deliver ergonomic control and accessory mounting options at the 3:00, 6:00 and 9:00 positions, while the flattop upper with enlarged ejection window, forward assist and dust cover provides easy rail-mounted optics installation. Ruger's Elite 452 two-stage trigger yields a smooth 4.5 lb pull and faster lock time, paired with a superalloy bolt and chrome-plated carrier/gas key for durability under heavy use; the carbine gas system and radial-port Ruger muzzle brake tame recoil for quicker follow-up shots. Built for hunters and tactical shooters who need large-caliber knockdown and AR-15 ergonomics, this rifle balances longevity, accuracy, and real-world field performance.