Diamondback DB15 AR 15 Features This Diamondback DB15 Rifle features a 4150 chrome moly barrel mid-length gas system and a shot-peened Mil-Spec 8620 bolt carrier. It utilizes 7075-T6 aluminum receivers 15 M-Lok handguard Magpul MOE-K2 grip and a Magpul CTR stock. This model has a Diamondback Black Gold lower receiver. Diamondback DB15 AR 15 Specifications Brand: Diamondback Category: Tactical Rifles Gun Platform: AR-Style Caliber: 5.56 NATO/223 Rem Model: DB15 Stock Finish: Black Action: Semi-Auto Barrel Length Range: 16 to 16.99 Sights: None Optic Ready Capacity: 30+1 Muzzle: Flash Hider Magazine Type: AR-15 Grips: Black Magpul MOE K2 Hand: Right Handguards: 15 M-LOK Max Capacity: 30 OAL: 32.75-36 Receiver Description: Diamondback Black Gold Receiver Finish: Black Receiver Material: 7075-T6 Aluminum Safety: Manual Thumb Stock Description: Adjustable Magpul CTR Stock Finish Group: Black Stock Material: Synthetic Thread Pattern: 5 / 8-24 tpi Twist: 1:8 Weight: 6.80 lbs Barrel Description: 4150 Chrome Moly Barrel Finish: Black Nitride Barrel Length: 16