Diamondback DB15 5.56 Pistol with SBA3 Brace

Diamondback DB15 AR Pistol: Compact Power in 5.56 NATO

The Diamondback DB15 represents a thoughtful approach to the modern AR pistol platform. This is a purpose-built firearm for shooters who value maneuverability without sacrificing reliability or ergonomics.

Barrel and Gas System

The 10-inch barrel is manufactured from 4150 Chrome-Moly steel with a 1:8 twist rate, optimized for 5.56 NATO ammunition. The pistol-length direct impingement gas system keeps the overall profile compact while maintaining the proven reliability of the direct impingement design. The barrel is finished in black nitride for corrosion resistance.

Receiver and Bolt Carrier Group

Both upper and lower receivers are forged from 7075-T6 aluminum, the same material specification used in military-grade AR platforms. The bolt carrier group features a shot-peened, magnetic particle inspected Mil-Spec 8620 carrier—a no-compromise approach to durability. The upper receiver includes an A3 flattop configuration with T-marks for optic mounting.

Ergonomics and Controls

The 9-inch M-LOK handguard provides ample real estate for accessories while keeping weight minimal. The Magpul MOE grip offers a comfortable, secure hold. The SB Tactical SBA3 brace provides stability and control, whether used as a stabilizing brace or in other configurations compliant with local regulations.

Specifications

• Caliber: 5.56 NATO
• Barrel Length: 10 inches
• Overall Length: 26 inches (collapsed) / 28.5 inches (extended)
• Weight: 5.7 pounds
• Handguard: 9-inch M-LOK rail
• Grip: Magpul MOE
• Brace: SB Tactical SBA3
• Muzzle Device: A2 flash hider (5/8 x 24)
• Trigger: Standard Mil-Spec
• Magazine: Magpul Gen M3 PMAG, 30-round capacity
• Finish: Black Cerakote

Why Choose the DB15?

This pistol is built for shooters who understand that a quality AR platform doesn't require compromise. Every component—from the forged receivers to the inspected bolt carrier—reflects Diamondback's commitment to reliability. The compact form factor makes it ideal for home defense, training, or recreational shooting where maneuverability matters.