Molded, one-piece chassis and adjustable buttstock assembly are manufactured with glass-filled nylon for strength, stiffness and stability; Big-Gun bolt throw adjustment enables shooters to change from a rimfire 1-1/2" bolt throw to a short-action centerfire 3" bolt throw, reducing the chance of short-stroking your bolt in competition; Ruger Marksman Adjustable trigger has a pull weight range of 2.25 to 5.0 pounds; adjusting wrench is stored in a buttstock compartment; Ruger's own AR-Pattern pistol grip and safety selector incorporates an extended reach for maximum control and access to the 45 degree, reversible safety selector; Anodized Picatinny scope base includes 30 MOA elevation for increased long-range capabilities out of the box; Oversized bolt handle for positive bolt manipulation (same as the Ruger Precision Rifle); 15" free-float handguard is made of hard black anodized aluminum; 18" target barrel is cold hammer-forged from 1137 alloy steel to create ultra precise rifling for excellent accuracy; Accepts all 10/22 magazines; Includes one 15-round BX-15 magazine