Diamondback Firearms designs some of the most sought-after firearms in the industry. The DB-15 was and still remains their flagship product and is offered in a variety of configurations. This model features their proprietary Diamond lower receiver, 15″ M-LOK S-Rail handguard, and muzzle brake. The 16″ barrel features a 1:8 twist with a mid-length gas system, and the trigger is a CMC 3.5 lb single-stage drop-in trigger for a crisp, clean pull and short reset for lightning fast shooting. The rifle also comes equipped with a Magpul ACS-L Stock, MOE K2+ grip, and includes a 30-round Gen 2 PMAG magazine.