Diamondback Firearms DB15DSB AR-15 5.56 NATO Semi-Automatic Rifle with M-Lok HandguardThe Diamondback DB15DSB is built with the Diamond Series Enhanced Lower Receiver! Diamondback is excited to introduce the DB15DSB, featuring the Diamond Series Enhanced Skeletonized Trigger Guard lower receiver. The lower and upper are forged from 7075-T6 aluminum and come standard with a hard-coat anodized finish. The 16-inch chrome-moly vanadium barrel runs off of a mid-length gas system designed to soften the recoil impulse. The rifle has been outfitted with a series of Magpul and Diamondback hardware including a MOE K2+ pistol grip, ACS-L stock, and 15-inch Diamondback free-float M-Lok rail. When it comes time to squeeze the trigger, the CMC 3.5 lb single-stage trigger will be at your fingertip providing you with a crisp, smooth pull. The overall weight of the package comes in at a trim 7.15 lbs and at just 34 inches with the stock collapsed. Add this Diamondback DB15DSB to your cart today and see for yourself the Diamondback difference.Diamondback DB15DSB Semi-Auto Rifle (Matte Black) Features and Specifications:Diamondback Firearms DB15DSBDirect Gas Impingement System Semi-Automatic Rifle5.56 NATO (Accepts 5.56 NATO and .223 Remington)16" 4150 CrMov Barrel (Black Nitride)1:8" Twist RateBarrel Threaded 1/2x28Diamondback CNC Muzzle BrakeA3 Flattop Forged 7075-T6 Aluminum Upper ReceiverForged 7075-T6 Aluminum Lower Receiver (Enhanced Skeletonized Trigger Guard)Mid-Length Gas SystemPinned Gas BlockDiamondback 15" Free-Float M-Lok Anti-Rotation S-RailMagpul MOE K2+ Pistol GripMagpul ACS-L Collapsible Stock30-Round Magazine (AR-15 Standard Pattern)Diamondback Pro SightsCMC 3.5lb Single-Stage Drop-In TriggerBCG Mil-Spec 8620 Carrier (Laser Logo)Shot-Peened/Magnetic Particle InspectedOverall Length: Collapsed 34" / Extended 37-1/4"Overall Weight: 7.15 lbsMatte Black Finish