The Diamondback DB15 Extended Line in 5.56 NATO pairs a 16-inch barrel with a 15-inch M-LOK handguard (brand part no. DB1717K005). It uses a carbine-length gas system, a Magpul MOE stock and MOE grip, and a Diamondback Carbon lower. A black nitride 4150 CrMoV barrel and an A2 flash hider finish the front end. Diamondback Firearms designs the Extended Line for shooters who want a defined set of upgraded design elements on a dependable AR-15 platform.

Key Specifications

• The chambering is 5.56 NATO, which suits general-purpose range and defensive use.
• The barrel is 16 inches, 4150 CrMoV with a medium profile, a 1:8 twist and a black nitride finish.
• The gas system is carbine length direct impingement.
• The handguard is a 15-inch M-LOK rail for lights, grips and other accessories.
• The muzzle device is an A2 flash hider threaded 1/2×28.
• The stock is a Magpul MOE and the grip is a Magpul MOE.
• One 30-round Magpul Gen M2 PMAG is included.
• The upper is a forged 7075-T6 A3 flattop and the lower is the forged Diamondback Carbon lower.
• The finish is black hardcoat anodize with a standard mil-spec trigger and no sights fitted.
• Weight is 6.6 pounds and the collapsed length is 32-1/2 inches.

Frequently Asked Questions

Is this DB15 carbine-length or mid-length gas? Diamondback lists this Extended Line model with a carbine-length direct impingement gas system.

What handguard does it have? A 15-inch M-LOK rail, as Diamondback lists it.

Does it include a magazine? Yes. One Magpul Gen M2 PMAG with a 30-round capacity is included.

Buy the Diamondback DB15 Extended Line Rifle, 5.56 NATO, 16-Inch, 15-Inch M-LOK, Black, 30-Round

With a long M-LOK rail, Magpul furniture and a standard AR-15 layout, this Extended Line DB15 is easy to set up. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles.