Diamondback Db15 Dia Db1916K001 5.56 10In Crbn Pstl 30R Blk

The Diamondback DB15 5.56 pistol is a compact, semi-automatic AR-platform firearm built for shooters who want the ergonomics and modularity of the AR pattern in a short-barreled package. With its 10-inch 4150 CrMov barrel, carbine-length gas system, and 26–28.5-inch overall length, this is a serious choice for close-quarters training, home defense, or tactical use. It arrives with a 30-round Gen 2 PMAG and an SBA3 stabilizing brace, ready to run.

The DB15 starts with solid fundamentals: a forged 7075 T-6 aluminum upper and lower receiver, both a hallmark of good AR builds, paired with a mil-spec 8620 bolt carrier group that's been shot-peened and magnetic particle inspected. That attention to internal quality means reliability you can count on when it matters. The A3 flattop upper gives you true Picatinny real estate for mounting optics, and the 9-inch M-LOK handguard is modular enough for lights, lasers, or fore-grip attachment.

The 10-inch barrel sports a black nitride finish with an A2 flash hider—practical details that reduce flash signature and keep the gun running clean. Standard trigger, MOE pistol grip, and that SBA3 brace round out a config that's field-proven and easy to customize. No sights come installed, so you're free to pick glass or irons that match your mission. At just 5.7 pounds, this pistol-length AR is light enough for extended handling without feeling under-built.

If you shoot ARs and want to add a nimble, serious 5.56 firearm to your safe—whether for home defense, SBR potential, or precision pistol work—the Diamondback DB15 delivers mil-spec bones and honest construction without pretense.

Key Features

• Semi-automatic action with carbine-length gas system for reliable cycling
• 10-inch 4150 CrMov barrel with 1:8 twist rate and A2 flash hider
• Forged 7075 T-6 aluminum upper and lower receivers for strength and durability
• Mil-spec 8620 bolt carrier group, shot-peened and magnet-particle inspected
• A3 flattop upper receiver with full-length Picatinny rail for optic mounting
• 9-inch M-LOK handguard for lights, lasers, and accessories
• SBA3 stabilizing brace and MOE pistol grip included
• Ships with one 30-round Gen 2 PMAG
• Lightweight at 5.7 lbs, compact at 26–28.5 inches overall

Specifications

Frequently Asked Questions

What's included in the box?

The Diamondback DB15 comes with one 30-round Gen 2 PMAG, the SBA3 stabilizing brace, and the firearm. Sights are not included; the A3 flattop upper is ready for you to mount an optic of your choice.

Is this a legal pistol, or can it be configured as an SBR?

As shipped, this is a short-barreled pistol with a stabilizing brace and no barrel shroud traversing the magazine well. Always verify your local and federal laws; SBR regulations vary by jurisdiction. We cannot provide legal guidance on configuration or registration.

What kind of optics and accessories will fit?

The A3 flattop upper has a full-length Picatinny rail, so any standard Picatinny-mounted optic will work—red dots, magnified scopes, prisms, etc. The 9-inch M-LOK handguard accepts M-LOK accessories like lights, lasers, vertical grips, and rail segments.

What magazines are compatible?

Any 5.56 NATO or .223 Remington magazine with 30-round or lower capacity. The DB15 accepts standard AR-platform mags; the included Gen 2 PMAG is reliable and widely available.