Diamondback DB15 .300 AAC Blackout 16-inch M-LOK 30+1

The Diamondback DB15 in .300 AAC Blackout is built as a lightweight, service-oriented AR platform for practical shooting tasks. It ships with a 16-inch heavy 4150 CrMoV barrel finished in black nitride and a 15-inch free-float M-LOK handguard for modular accessory mounting. The rifle pairs a forged 7075-T6 aluminum upper with a DB15 carbon lower and Magpul furniture for user-focused ergonomics. Outfitted with a pistol-length direct impingement gas system and standard mil-spec trigger components, the DB15 balances durability with straightforward maintenance.

Key Specifications

• The caliber is .300 AAC Blackout.
• The barrel measures 16 inches and is described as threaded.
• The barrel uses a 4150 CrMoV heavy profile with a black nitride finish.
• The rifle operates with a pistol-length direct impingement gas system.
• The upper is a forged 7075-T6 aluminum component.
• The lower is identified as a DB15 carbon lower (as listed in product details).
• The handguard is a 15-inch M-LOK free-float design with anti-slip texture pads.
• The twist rate is 1:8.
• The magazine capacity is listed as 30 + 1 rounds and it includes a Magpul PMAG.
• The muzzle device is an A2 flash hider (5/8×24) and the rifle weighs 6.7 lbs.

Engineered for straightforward performance, the DB15 .300 AAC Blackout brings practical features—threaded nitride barrel, M-LOK modularity, Magpul ergonomics—into a relatively light package. Its configuration suits a range of uses from precision-minded target work to general field use and responsible home applications, offering a familiar AR platform layout alongside components selected for durability and everyday handling.