Diamondback Firearms DB-15 Pistol .300 AAC Blackout 10″ Barrel Black SBA3 Brace

The Diamondback DB-15 in .300 AAC Blackout is a compact, hard-use AR pistol built for close-quarters performance and suppressor-ready configurations. The 10-inch barrel paired with the SBA3 pistol brace delivers a maneuverable platform without sacrificing the terminal performance .300 BLK is known for. Whether you’re running it suppressed or unsuppressed, this pistol ships ready to go with a 30-round Magpul PMAG included.

Key Specifications

• Chambered in .300 AAC Blackout, optimized for both supersonic and subsonic loads.
• The barrel measures 10 inches with a black hard coat anodized finish for corrosion resistance.
• A 1:8″ right-hand twist rifling stabilizes the full range of .300 BLK projectile weights.
• The muzzle is threaded 5/8″x28, making it suppressor and muzzle device ready straight from the box.
• Ships with 1 x 30-round Magpul PMAG for an immediate range-ready setup.
• Operates on a semi-automatic action with a thumb safety.
• ATF-classified as a pistol, featuring the Bravo Company SBA3 pistol brace.
• Overall length is 26 inches in the standard configuration.
• Configured with no sights installed, leaving the top rail open for your preferred optic.

The DB-15 .300 BLK pistol from Diamondback Firearms is a purpose-built platform that thrives in tight spaces and suppressed roles. The 10-inch barrel keeps things compact while the 1:8 twist and 5/8×28 threaded muzzle give you the flexibility to run a wide range of loads and accessories. With a no-nonsense black finish, an included PMAG, and a clean optics-ready rail, this is a serious short-barreled alternative for shooters who demand versatility and reliability in a compact AR package.