Ruger AR-556 MPR 450 Bushmaster AR-15 Semi-Automatic Rifle
Product Features & Specifications Ruger 8522 AR-556 MPR 450 Bushmaster 5+1 18.63" 4140 Chrome-Moly Steel Barrel, Hard Coat Anodized Finish, 15" Free-Float Handguard, Magpul MOE SL Adjustable Stock & Grip, Elite 452 Two Stage AR-Trigger Ruger's AR-556 MPR rifle has a rifle-length gas system w
