Diamondback Firearms DB15, Semi-automatic Rifle, 300 Blackout, 16″ Threaded Barrel, Black, 15″ MLOK Rail

Product Description

The Diamondback DB15 300 Blackout rifle delivers dependable semi-automatic performance in one of today’s most versatile rifle calibers. This 16″ threaded barrel platform pairs precision engineering with practical ergonomics for both range and field use.

Built on the proven DB15 platform, this rifle feeds from a 30-round magazine and chambers the .300 Blackout cartridge. The 16″ barrel length balances velocity retention with handling ease. Additionally, the threaded barrel opens endless suppressor and muzzle device options for shooters seeking customization.

Designed for Versatility

The Diamondback DB15 excels at sporting use and recreational target shooting. Furthermore, the 15″ MLOK rail provides ample real estate for mounting optics, lights, and other accessories. This semi-automatic rifle handles everything from range sessions to backcountry hunting.

Diamondback Firearms engineered this DB15 with shooter feedback in mind. The matte black finish resists glare and corrosion. Therefore, you get a clean, no-frills platform ready to accept your preferred optics and upgrades.

Key Specifications

Caliber: .300 Blackout. Action: Semi-automatic. Barrel length: 16″ threaded. Magazine capacity: 30 rounds. Finish: Matte black. The rifle ships with one metal magazine included.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What caliber is the Diamondback DB15?

A: The DB15 is chambered in .300 Blackout, a highly versatile intermediate cartridge. It excels in both supersonic and subsonic applications for sporting and recreational use.

Q: How do I order and receive this rifle?

A: Order online at Western Sport and we will ship it to your local FFL dealer for transfer and background check.

Q: What comes with the rifle?

A: The Diamondback DB15 ships with one 30-round metal magazine and is covered by the manufacturer’s full warranty.

Q: Is the barrel threaded for suppressors?

A: Yes, the 16″ barrel is threaded, allowing you to attach suppressors, flash hiders, or other muzzle devices for customization and noise reduction.

Additional information