<p>Hunter model is chambered in .308 Win. or 7.62 x 51 NATO comes with a 18†Chrome Moly Vanadium Steel barrel with a 1-10 twist, Forged Receivers , Anderson’s proprietary 17-4 stainless steel match grade Trigger and Hammer, Anderson 308 Knight Stalker Flash hider, Anderson’s EXT Free Float, Molding Solutions TI17 Butt stock and MagPul pistol grip, Ambi sling mount ,comes with one twenty round magazine. All receivers, charging handles and buffer tubes are 7075 T6. Please note this rifle is available treated with our proprietary NO LUBE RF85 treatment as well as untreated. California Compliant SPECIFICATIONS & FEATURES Caliber : .308 Win. Action : Semi-Automatic Magazine Capacity : 1-10 round Overall Length : 34 â€, 38 1/8†Extended Extended Barrel Length : 18″ HBAR Rifling : 1-10 Twist Weight w/o Magazine : 8.9 lbs. Receiver : Forged 7075-T6 Front Sight : Optic Ready Butt Stock : Ti7 Grip : Magpul Forearm : Anderson’s EXT Free Float Flash Hider : Anderson Knight Stalkeail</p>