Diamondback Firearms DB15 rifle made entirely in the USA. It uses a gas-impingement system and high quality CNC machined components. The DB15300 model features a melonite coated, 4140 chrome-moly, free-float barrel, forged 7075 T6 aluminum lower along with an A3 flattop upper receiver, no sights, and a carbine length gas system. This model has an A2 flash hider, ATI Strikeforce buttstock and buffer tube, A2 pistol grip, Diamondback 9.5" M-LOK handguard, and a black hardcoat anodized finish. PRODUCT SPECS Model:  DB15CCML300B Color:  Black Caliber:  .300 Blackout Finish:  Black Anodized Hardcoat Barrel:  Diamondback Barrels 16" 4140 Chrome-Moly, Free Float, Black Nitride Barrel Twist Rate:  1:8 RH Gas System:  Carbine Length Gas System Bolt Carrier:  Azimuth 5.56 Sporter Model, Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 carrier Lower Receiver:  Forged 7075 T6 Aluminum Upper Receiver:   A3 Flattop Forged 7075 T6 Aluminum Handguard:  12” Aluminum M-LOK Rail Pistol Grip:  A2 Style Standard Grip Magazine:  30 Round Metal Mag Flash Hider: A2 Weight:  6.65 lbs. Overall Length (Stock Collapsed):  32" Overall Length (Stock Expanded):  36” Buttstock:  6-Position Roger's Super-Stock Sights:  No Sights