The Diamondback DB15 in 6mm ARC (MPN DB1784V001) is a semi-automatic AR-platform rifle finished in black, pairing an 18-inch black nitride barrel with a 1-in-7.5 twist rate tuned for heavier 6mm ARC bullets. Diamondback Firearms threads the muzzle at 5/8×24, and the rifle feeds from a detachable magazine with a 26-round capacity; one 26-round magazine ships with the rifle. No sights are installed, leaving the rifle ready for an optic. Among AR-platform rifles in the AR rifles category, the DB15 favors shooters who want the compact-cartridge efficiency of 6mm ARC in an AR-15-size platform.

Key Specifications

• Chambered in 6mm ARC with a 1-in-7.5 rate of twist.
• Features an 18-inch black nitride barrel.
• Threaded muzzle at 5/8×24.
• Includes an M-Lok handguard for accessory mounting.
• Feeds from a detachable magazine with a 26-round capacity.
• Ships with one 26-round magazine.
• Ships with no sights installed, ready for an optic.
• Ships at approximately 9 pounds.
• Includes a manual safety.

Frequently Asked Questions

What twist rate does this barrel use? A 1-in-7.5 twist, tuned for heavier 6mm ARC bullets.

Is the muzzle threaded? Yes, at 5/8×24.

Does this rifle come with sights? No, it ships without sights, ready for an optic to be mounted.

Buy the Diamondback DB15 6mm ARC

The compact-cartridge efficiency of 6mm ARC in an AR-15-size platform is exactly what the DB15 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.