Diamondback DB10 Handgun .308 Win 20rd Magazine 13.5" 5/8x24 Threaded Barrel Black with SBA3 Brace

The Diamondback DB10 is a .308 Winchester AR pistol built for shooters who want serious firepower in a compact, maneuverable package. This 13.5" barreled rifle-caliber pistol pairs a mid-length gas system with a SB Tactical SBA3 brace, delivering a balance of control and portability that works for both range training and home defense. At 5.1 lbs, it handles like a modern tactical pistol while delivering the stopping power and range of a full rifle cartridge—ideal for those who need capability without the footprint of a traditional AR.

Built on Diamondback's forged 7075 T-6 aluminum lower and A3 flattop upper, this DB10 starts with a solid platform. The 13" M-LOK handguard gives you mounting flexibility for lights, lasers, or other accessories, while the Magpul MOE K grip and included Magpul Gen M3 20-round PMAG round out a functional, no-frills setup. The barrel is nitride-treated 4150 CrMov steel with a 1:10 twist and 5/8x24 threading—ready for a suppressor or brake if you choose to add one later. The A2 flash hider comes standard. Mil-spec trigger and bolt carrier group keep maintenance straightforward and parts support accessible.

This is a stripped-down, working firearm for shooters who value reliability and practicality over trendy features. The collapsed length of 30" keeps the profile tight, making it at home in a truck, bag, or behind a door. Whether you're testing a new cartridge, running drills at the range, or looking for a home-defense AR pistol with rifle-class power, the DB10 delivers genuine utility without the weight or complexity.

Key Features

• .308 Winchester caliber with proven mid-length gas system
• 13.5" nitride barrel with 5/8x24 threading for muzzle devices
• SB Tactical SBA3 stabilizing brace for better control
• Forged 7075 T-6 aluminum upper and lower for durability
• 13" M-LOK rail for attaching optics and accessories
• Magpul MOE K grip and Magpul Gen M3 20-round magazine included
• Lightweight at 5.1 lbs, collapses to 30" for portability
• Mil-spec trigger and shot-peened BCG for reliability

Specifications

Frequently Asked Questions

What .308 ammo does the DB10 use, and what's the magazine capacity?

The DB10 fires standard .308 Winchester ammunition. It ships with one Magpul Gen M3 PMAG loaded for 20 rounds, which is a common capacity for .308 AR platforms.

Can I add a suppressor or muzzle brake to this pistol?

Yes. The barrel is threaded 5/8x24, which is the standard for .308 suppressors and brakes. The A2 flash hider that comes installed is removable. Check your local laws regarding .308 pistol suppressors and registration requirements.

Is the SBA3 brace legal, and what's included in the box?

The SB Tactical SBA3 is a stabilizing brace designed for legal use with a pistol platform. Always confirm your local and state laws regarding AR pistols and braces. The DB10 ships with the SBA3 installed, a Magpul MOE K grip, one Magpul Gen M3 20-round magazine, and the A2 flash hider.

Do I need an optic to shoot this, or is there a way to mount one?

No optic is included, and the DB10 ships with no iron sights. The A3 flattop upper receiver is drilled and tapped for Picatinny optic mounts. The 13" M-LOK handguard also allows mounting accessories forward of the upper receiver.