Diamondback DB1913K101 DB15 5.56 NATO 30+1 7" Black Nitride Heavy Threaded Barrel, OD Green Cerakote Picatinny Rail Aluminum Receiver, 6" M-LOK Handguard, SB Tactical Brace & Black Magpul MOE Grip

The Diamondback DB15 5.56 NATO pistol is a compact, hard-hitting alternative to traditional AR pistols, built on a forged aluminum receiver and topped with an A3 flattop upper that accepts standard optics and accessories. This OD Green Cerakote finished rifle delivers the modularity and reliability of the AR platform in a shorter, maneuverable package—ideal for home defense, truck guns, close-range shooting competitions, or anyone wanting a lightweight 5.56 platform without a full rifle footprint.

Under the hood, you're getting serious engineering: a 7-inch heavy-barrel chambered in 5.56 NATO with a 1:8 twist rate, finished in durable black nitride and capped with an A2 flash hider. The gas system runs direct impingement with a pistol-length setup, keeping the action softer and the profile compact. The bolt carrier is shot-peened and magnetically inspected 8620 mil-spec steel—the same quality standard you'll find in premium mil-spec builds. A 6-inch M-LOK handguard gives you plenty of space for lights, lasers, or vertical grips without excess weight or length.

The ergonomics speak to practical shooting: a mil-spec trigger for predictable breaks, Magpul MOE grip for sure control, and an SB Tactical brace that collapses from 25.50 inches to 23 inches for tight vehicle storage or one-handed manipulation. The whole rig weighs just 5.4 pounds—light enough to handle all day, heavy enough to manage recoil and runs smoothly. It ships with a Magpul 30-round PMAG, so you're ready to sling lead out of the box. No sights are included, leaving the rail clear for your optic choice and keeping cost and weight down.

If you run a pistol-caliber setup now and want to step up to the ballistics and range of 5.56, or you need a compact, modular rifle that doesn't eat up safe space, the Diamondback DB15 is a no-nonsense choice built on proven AR DNA.

Key Features

• 7-inch heavy 4150 CrMoV barrel with 1:8 twist, black nitride finish for corrosion resistance
• Direct impingement pistol-length gas system for compact operation and soft recoil impulse
• Forged 7075 T-6 aluminum receiver (upper and lower) with A3 flattop for optic mounting
• 6-inch M-LOK handguard for rail space and modular accessory mounting
• Shot-peened, magnetically inspected mil-spec bolt carrier for durability
• SB Tactical SBA3 brace with collapsible design (23" to 25.50" length)
• Magpul MOE pistol grip and 30-round Magpul PMAG included
• Lightweight at 5.4 lbs, ideal for vehicle storage or sustained shooting
• A2 flash hider (1/2 x 28 threaded muzzle)
• OD Green Cerakote finish for distinctive, durable aesthetics

Specifications

Frequently Asked Questions

What optics can I mount on this pistol?

The A3 flattop receiver uses standard Picatinny rail mounts, so any optic with Picatinny mounting (red dots, low-power variables, magnified scopes) will fit. Because sights are not included, you have a clean rail to choose your own setup.

Is the SB Tactical brace legal for my state?

We can't advise on state or federal law. Brace legality varies by jurisdiction and continues to evolve. Check your local and federal regulations before purchase or use.

Can I add a vertical grip or light to the handguard?

Yes. The 6-inch M-LOK handguard accepts standard M-LOK accessories, including vertical grips, flashlights, laser modules, and other rail-mounted gear.

What's included in the box?

The DB15 ships with one 30-round Magpul PMAG and is fully assembled and ready to shoot (pending optic and sight installation if desired).