Diamondback DB15 5.56 NATO AR-15 Rifle | 16" Nitride Barrel, Free-Float M-LOK Handguard, Magpul Furniture, 60-Round Magazine Included
This Diamondback DB15 blends proven AR-15 architecture with in-house precision manufacturing. A slick-side billet upper, nitride-treated 16-inch barrel, and Diamondback’s proprietary 15-inch free-float M-LOK handguard give the rifle a clean profile and solid performance. Paired with Magpul MOE furniture and a generous 60-round magazine, it is a well-equipped, American-made rifle that’s ready for range or duty use.
Condition
Overall Condition: Very Good – Light, superficial marks from previous handling or use.
Bore Condition: Excellent – Bright, mirror-clean finish with no signs of wear.
Rifling Condition: Excellent – Sharp lands and grooves.
What’s Included
- Diamondback DB15 5.56 NATO rifle
- 1 × 60-round polymer magazine
- 2 × 30-round polymer magazines
- Stub-length M-LOK vertical fore-grip (installed)
The heart of this DB15 is a 16-inch 4150 CrMoV steel barrel, nitride treated inside and out for corrosion resistance and long service life. Its mid-length gas system softens recoil impulse while maintaining reliability with both 5.56 NATO and .223 Rem ammunition.
Diamondback machines the billet 7075-T6 receivers in Cocoa, Florida, then hard-coat anodizes them for durability. The slick-side upper omits the forward assist for a streamlined profile, and the integrated top rail mates cleanly with the 15-inch free-float M-LOK handguard for uninterrupted optics and accessory mounting.
Magpul MOE furniture—an adjustable stock and ergonomic pistol grip—provides a familiar, field-proven interface. A mil-spec trigger offers a crisp, consistent pull, while the threaded muzzle (1/2-28 UNEF) is ready for flash hiders, brakes, or suppressors.
With a 60-round magazine included alongside two standard 30s, the rifle ships range-ready and mission-flexible right out of the box.