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Diamondback Firearms DB15 Flat Top 5.56 NATO FDE/Tan Rifle

The Diamondback Firearms DB15 is a modern sporting rifle chambered in 5.56 NATO and built around a flat-top, optic-ready receiver. Its 16-inch threaded barrel balances maneuverability with practical performance, while the adjustable Magpul ACS-L stock and MOE-K2+ grip provide a secure, comfortable shooting position. The rifle features a single-stage trigger, manual safety, and 30+1 capacity for range use, training, and practical rifle applications.

Key features

  • 5.56 NATO chambering also accepts .223 Remington ammunition
  • 16-inch threaded barrel with 1/2x28 muzzle threads
  • Optic-ready flat-top receiver for flexible sighting system installation
  • Adjustable Magpul ACS-L stock supports a customized length of pull
  • Magpul MOE-K2+ grip improves control and handling comfort
  • Single-stage trigger provides a consistent trigger interface

The Diamondback DB15 combines a versatile 5.56 NATO platform with practical Magpul furniture and an optic-ready configuration.

Diamondback Firearms DB15 Flat Top 5.56 NATO FDE/Tan Rifle: quick facts

What caliber is the Diamondback Firearms DB15 Flat Top 5.56 NATO FDE/Tan Rifle?
It is chambered in 5.56 NATO.
How many rounds does it hold?
30+1 rounds; magazines included: 1.
How big and heavy is it?
Barrel length 16 inches, overall length 37.25 inches, weight 6.65 pounds.
What kind of action does it use?
Semi-Automatic.
Is it optic ready or threaded?
Optic ready: Yes; threaded barrel: Yes.
What sights and finish does it have?
finish: FDE/Tan.
Is it new or used?
New, in the original packaging.
Can I buy it in Texas?
Yes. It ships to a licensed FFL dealer in Texas; you pick it up there after the background check. Texas buyers pick this up at a licensed dealer after a NICS check, with no permit and no waiting period; dealers sell rifles and shotguns from age 18.
Is it in stock?
Yes, at $1378.79. Orders leave within 1-2 business days; shipping is free over $999.

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