Diamondback DB1916K101 DB15 5.56 NATO 30+1 10" Black Nitride Heavy Threaded Barrel, OD Green Cerakote Picatinny Rail Aluminum Receiver, 9" M-LOK Handguard SB Tactical Brace & Black Magpul MOE Grip

The Diamondback DB15 5.56 NATO pistol is a compact, modern take on the classic AR platform—built for shooters who want serious firepower in a maneuverable package. This 10-inch barreled AR pistol pairs a heavy, threaded barrel with an SB Tactical brace, delivering the handling of a short-stroke rifle in a lightweight (5.7 lb) form factor ideal for home defense, truck guns, or shooters who demand mobility without sacrificing capability. The OD Green Cerakote finish gives it a field-ready aesthetic while the 4150 CrMoV Black Nitride barrel promises durability through heavy use.

You'll appreciate the attention to detail here: the forged 7075 T-6 aluminum upper and lower are mil-spec tough, the shot-peened and magnetic-particle-inspected carrier ensures reliability, and the 9-inch M-LOK handguard gives you genuine modularity for mounting lights, lasers, or other tactical gear. The Magpul MOE grip and included Gen M2 PMAG 30-rounder round out a setup that's combat-ready from the box. Carbine-length direct impingement keeps the gas system proven and straightforward. This is a no-frills, no-compromise build that prioritizes function over flash.

At 26 inches collapsed and 28.5 inches extended, the DB15 fits tight spaces without feeling cramped or underpowered. The standard mil-spec trigger is predictable, and the A2 flash hider keeps things tidy on the muzzle. Whether you're stacking rounds at the range, running a home-defense drill, or building a truck-gun setup, the Diamondback DB15 delivers modern AR ergonomics and reliability in a compact package that actually handles like a pistol should.

Key Features

• 10-inch 4150 CrMoV barrel with Black Nitride finish and 1:8 right-hand twist for 5.56 NATO
• Heavy threaded barrel (1/2 x 28) ready for suppressors or muzzle devices
• SB Tactical brace for stable operation and compliance flexibility
• Carbine-length direct impingement gas system for proven reliability
• Forged 7075 T-6 aluminum receiver—upper and lower—mil-spec construction
• Shot-peened, magnetic-particle-inspected mil-spec carrier for durability
• 9-inch M-LOK handguard for mounting lights, optics, and accessories
• OD Green Cerakote finish for a field-ready, durable coating
• Magpul MOE grip and Gen M2 PMAG 30-round magazine included
• Lightweight at 5.7 lb—easy to handle in tight spaces
• Collapses to 26 inches; extends to 28.5 inches for maximum adaptability

Specifications

Frequently Asked Questions

What's the difference between this pistol and a standard AR carbine?

The Diamondback DB15 uses a 10-inch barrel and SB Tactical brace instead of a traditional stock, making it shorter and more maneuverable—roughly 26 inches collapsed. It fires the same 5.56 NATO round and uses a carbine-length gas system, but the compact form factor makes it ideal for tight spaces, vehicles, or shooters who prioritize handling over sight radius. Carbine-length gas impingement keeps it reliable despite the short barrel.

Can I add optics and lights to the M-LOK handguard?

Yes. The 9-inch M-LOK rail accepts standard M-LOK accessories—lights, lasers, bipods, and other gear mount directly without tools. The upper receiver has an A3 flattop with Picatinny rails, so optics go on top. You'll want to verify that any optic clears the SB Tactical brace when fully extended.

Is this AR pistol suppressor-ready?

The 10-inch barrel is threaded 1/2 x 28 and includes an A2 flash hider, so yes—you can thread on a suppressor or other muzzle device. The short barrel already reduces muzzle blast, and a suppressor would make it even quieter, though you should verify your local laws regarding suppressors on pistol-braced ARs.

What's included in the box?

The DB15 ships with a Magpul Gen M2 PMAG 30-round magazine in 5.56 NATO, the SB Tactical SBA3 brace, the Magpul MOE grip, and the A2 flash hider already installed. You'll need to supply ammo and optics; no sights come standard.