Diamondback DB1718B002 DB15 300 AAC Blackout 30+1 16" Black Nitride Threaded Barrel, Black Hardcoat Anodized Aluminum/Carbon Receiver w/Picatinny Rail Receiver, M-LOK Handguard, Magpul MOE Grip

The Diamondback DB15 300 AAC Blackout rifle is a practical, no-frills AR-platform choice for hunters and shooters who want a proven .300 Blackout setup without the premium price tag. Built on Diamondback's forged 7075 T-6 aluminum receiver set with a 16-inch heavy-profile 4150 CrMov barrel finished in black nitride, this carbine delivers the compact, subsonic-ready performance that makes .300 Blackout so appealing for suppressed hunting and range work. At 6.7 lbs, it's handy enough for hunting applications, and the 32.75-inch collapsed length makes it easy to move through brush or stow in a truck.

The rifle runs a pistol-length direct impingement gas system with a mil-spec carrier group that's been shot-peened and magnetic particle inspected—solid, battle-tested engineering that keeps things reliable. The A3 flattop upper receiver is equipped with a Picatinny rail for optics, and the 15-inch M-LOK handguard with anti-slip texture pads gives you modern accessory mounting without the weight penalty of full quad rails. The Magpul MOE grip is a no-nonsense choice that works well for most hand sizes, and the included Magpul Gen M3 PMAG (30-round capacity) is a standard you can trust.

Right out of the box, this rifle is ready to work. The A2 flash hider (5/8 x 24 threads) keeps muzzle signature manageable, and those threaded barrels accept suppressors or other muzzle devices if you want to tailor it later. The standard mil-spec trigger is predictable and clean. Whether you're building your first .300 Blackout, stepping up from a pistol, or rounding out a collection with a compact, capable rifle, the DB15 offers solid Diamondback quality without unnecessary weight or complexity.

Key Features

• 16-inch heavy-profile 4150 CrMov barrel in black nitride with 5/8 x 24 threaded muzzle ready for suppressors
• Forged 7075 T-6 aluminum upper and lower receivers with hard-anodized finish for durability
• Pistol-length direct impingement gas system with mil-spec shot-peened and magnetic particle inspected carrier
• A3 flattop Picatinny rail receiver for optic mounting
• 15-inch M-LOK handguard with anti-slip texture pads for modern accessory support
• Magpul MOE grip included for ergonomic control
• Magpul Gen M3 PMAG 30-round magazine included
• A2 flash hider for manageable muzzle signature
• Compact 1:8 right-hand twist barrel optimized for .300 Blackout ammunition

Specifications

Frequently Asked Questions

Is this .300 Blackout rifle suppressor-ready?

Yes. The 16-inch barrel has a 5/8 x 24 threaded muzzle that accepts standard suppressors and other muzzle devices. The .300 Blackout cartridge is inherently subsonic-friendly, making this a natural pairing for suppressed shooting.

What's included in the box?

The rifle ships with a Magpul Gen M3 PMAG 30-round magazine, Magpul MOE grip, and A2 flash hider installed. You'll need to supply an optic or iron sights separately.

What kind of magazines does this rifle use?

The DB15 uses standard AR-platform magazines. The included Magpul Gen M3 PMAG is a proven, reliable choice, and it's compatible with most modern AR magazines.

Is the DB15 good for hunting?

Yes. The 16-inch barrel and compact profile (32.75 inches collapsed) make it maneuverable in brush, and the .300 Blackout round is suitable for medium-game hunting. The rifie's weight at 6.7 lbs keeps it easy to carry all day.