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Diamondback Firearms DB15 Carbon Series 5.56 NATO .223 Remington Black Rifle

The Diamondback Firearms DB15 Carbon Series is a Colorado-compliant, direct-impingement rifle chambered in 5.56 NATO and compatible with .223 Remington ammunition. It features a 16-inch barrel, a 15-inch M-Lok handguard for accessory mounting, and a Magpul MOE carbine stock for adjustable fit. The flat-top upper receiver is optic ready, while the standard configuration includes a manual safety and a 10-round magazine.

Key features

  • 5.56 NATO chambering also supports .223 Remington ammunition
  • 16-inch barrel provides a practical balance of handling and velocity
  • 15-inch M-Lok handguard offers flexible accessory mounting
  • Magpul MOE carbine stock provides adjustable length of pull
  • 10+1 capacity meets the Colorado-compliant configuration
  • Flat-top receiver is ready for a separately purchased optic

The DB15 Carbon Series combines familiar AR-pattern controls with a compliant 10-round configuration and versatile M-Lok accessory mounting.

Diamondback Firearms DB15 Carbon Series 5.56 NATO .223: quick facts

What caliber is the Diamondback Firearms DB15 Carbon Series 5.56 NATO .223?
It is chambered in 5.56 NATO, .223 Remington.
How many rounds does it hold?
10+1 rounds; magazines included: 1.
How big and heavy is it?
Barrel length 16 inches, overall length 32.5 inches, weight 6.5 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: Black.
Is it new or used?
New, in the original packaging.
Can I buy it in Utah?
Yes. It ships to a licensed FFL dealer in Utah; you pick it up there after the background check. Rifles and shotguns ship to your chosen Utah FFL dealer for the background check and pickup, with no state waiting period.
Is it in stock?
Yes, at $603.74. Orders leave within 1-2 business days; shipping is free over $999.

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