The Diamondback DB15 .300 Blackout black pistol (brand part no. DB1916B001) is a 10-inch short-barrel AR built for close-range use. Diamondback Firearms finishes the forged flattop upper and Diamondback Carbon lower in black hardcoat anodize and tops the pistol-length gas system with a heavy, black-nitride barrel. A 9-inch M-LOK rail, Magpul MOE grip and SB Tactical SBA3 brace round out the build, and a 30-round Magpul PMAG is included. It is a straightforward platform for a truck gun, a home-defense pistol or a range gun.

Key Specifications

• The chambering is .300 Blackout, a cartridge designed to deliver rifle-class performance from short barrels.
• The barrel is 10 inches long with a 1:8 right-hand twist in heavy 4150 CrMoV with black nitride, which gives good wear resistance.
• The gas system is pistol length, matched to the short barrel for dependable cycling.
• The finish is black hardcoat anodize, a classic AR coating that resists abrasion and rust.
• The brace is an SB Tactical SBA3, which supports the pistol against the forearm for steadier shooting.
• The handguard is a 9-inch M-LOK rail, leaving plenty of room for a light or a vertical grip.
• The upper receiver is a forged 7075-T6 aluminum A3 flattop with a rail for optics.
• The muzzle is fitted with an A2 flash hider on 5/8×24 threads, a common pattern for brakes and other devices.
• The weight is 5.7 pounds, a manageable figure for a 10-inch pistol with a brace.
• The overall length is 25 3/4 inches, compact enough to stow in a bag or behind a seat.

Frequently Asked Questions

Is this the black or the OD Green version? This listing is the black hardcoat anodize model. The OD Green Cerakote pistol is a separate listing.

What brace and grip does it have? The maker lists an SB Tactical SBA3 brace and a Magpul MOE grip.

How many rounds does the magazine hold? The included Magpul Gen M3 PMAG holds 30 rounds.

Buy the Diamondback DB15 Pistol, .300 Blackout, 10-Inch, Black, SBA3 Brace

If you want a no-frills .300 Blackout pistol in classic black, the DB15 delivers the short barrel, the brace and the accessory-ready handguard without extras you will not use. Our Lubbock, Texas gun shop ships it to your FFL quickly and fully insured, and you can see other AR pistols on the site.