Diamondback Obsidian DB15 Features The DB15 is equipped with a 16-inch chrome moly vanadium barrel providing superior accuracy and durability. The 1:8 twist rate ensures stability for a wide range of bullet weights making it a versatile choice for shooters. The threaded barrel (1/2x28) with an Obsidian muzzle brake is suppressor-ready allowing for additional recoil reduction and muzzle control. The 15-inch M-LOK anti-rotation rail provides ample space for optics grips lights and accessories ensuring maximum customization potential. The Magpul MOE K2+ grip and Magpul CTR stock offer superior ergonomics and handling making this rifle comfortable and easy to maneuver. The forged 7075-T6 aluminum upper and lower receivers enhance durability without excessive weight while the two-position thumb safety provides added security and ease of use. Diamondback Obsidian DB15 Specifications Manufacturer: Diamondback Firearms Model: Obsidian DB15 Category: Rifles Caliber: .223 Remington / 5.56 NATO Capacity: 30+1 rounds Overall Length: 33 - 36.25 Barrel Length: 16 inches Barrel Material: Chrome Moly Vanadium Twist Rate: 1:8 Muzzle Device: Obsidian Muzzle Brake Thread Pattern: 1/2x28 Sights: None (Optics Ready) Handguard: 15 M-LOK Anti-Rotation Rail Receiver Material: Forged 7075-T6 Aluminum Finish: Jungle Green Cerakote Grip: Magpul MOE K2+ Stock: Magpul CTR Adjustable Stock Safety: 2-Position Thumb Safety Weight: 6.6 lbs. Shipping Weight: 8.35 lbs. Magazine: 30-round PMAG