<p>300 Blackout chambered in 300 AAC comes with a 16†Chrome Moly Vanadium Steel barrel 1-8 twist, Carbine Gas Set Up, Forged Receivers, Magpul Butt stock and Magpul pistol grip, Anderson EXT Free Float, Anderson Low Profile Gas Block, Anderson 308 Knight Stalker Flash Hider, Anderson’s proprietary 17-4 stainless steel match grade Trigger and Hammer, Standard Charging Handle, Ambi sling mount. 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 : 300 AAC Blackout Action : Semi-Automatic Magazine Capacity : 1-10 round Overall Length : 32 ½â€, 36 1/8†Extended Extended Barrel Length : 16†HBAR Rifling : 1-8 Twist Weight w/o Magazine : 6.2 lbs. Receiver : Forged 7075-T6 Front Sight : Optic Ready Butt Stock : Magpul Grip : Magpul Forearm : Andersons EXT Free Float Flash Hider : Anderson Knight Stalker Gas Block</p>