The Diamondback Firearms DB15 Obsidian Series is an AR-style pistol chambered in 5.56 NATO and finished in OD Green Cerakote. It features an 11.5-inch 4150 CrMoV barrel with a 1:8 right-hand twist, carbine-length direct impingement, and a shot-peened, magnetic particle inspected Mil-Spec 8620 bolt carrier. The forged 7075-T6 aluminum upper and lower receivers provide a durable foundation, while the 11-inch M-LOK handguard offers flexible accessory mounting with integrated Picatinny rail and QD attachment points. An SB Tactical SBA5 brace, Magpul MOE K2 grip, and one 30-round Magpul Gen M3 PMAG complete the configuration.

Key features

• 5.56 NATO chambering with 30+1 capacity
• 11.5-inch 4150 CrMoV barrel with 1:8 right-hand twist
• OD Green Cerakote finish with a black nitride barrel
• Carbine-length direct-impingement operating system
• Forged 7075-T6 aluminum upper and lower receivers
• 11-inch M-LOK handguard with full Picatinny rail and QD mounts for accessories and sling attachment points

The DB15 Obsidian Series combines compact AR-style handling with practical accessory compatibility in a ready-to-configure 5.56 NATO pistol.