<p>Purpose built for 3-gun and practical rifle competition, the AR103GN18 is ready to dominate, right from the box. A Timney 4-lb., single-stage trigger and Ergo wide grip are standard. The light weight MBA-1 buttstock is adjustable for cheekpiece and length-of-pull, and an ambidextrous safety and Raptor charging handle provide ease of operation. Safety: Ambidextrous Gas system: Adjustable Charging handle: “Raptor” Ambidextrous Model: AR-10 3-Gun Caliber: 7.62X51 mm / .308 Barrel: 18″ stainless steel Rifling Twist: 1:10″ RH Muzzle Device: Armalite tunable brake Front Sight Base: 2″ MIL-STD 1913 rail section at forward 12 o’clock position of handguard Upper Receiver: Forged, flat-top with MIL-STD 1913 rail, 7075-T6 aluminum Lower Receiver: 7075-T6 aluminum (forged) Trigger: Timney 4 lb. single-stage Stock: MBA-1 light weight precision adjustable for length-of-pull and comb height Overall Length: 40.3″ / 41.5″ Weight: 8.9 lbs. Finish: Anodized aluminum upper/lower receiver California Compliant</p>