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Diamondback Firearms DB15 Carbon .223 Remington 5.56 NATO Brown Rifle

The Diamondback Firearms DB15 Carbon is a lightweight semi-automatic rifle chambered for .223 Remington and 5.56 NATO. It features a 16-inch 4150 chrome-moly barrel with a 1:8 twist, mid-length direct-impingement gas system, and threaded muzzle fitted with an A2 flash hider. A forged 7075-T6 aluminum receiver, 15-inch M-LOK handguard, Magpul MOE grip, and adjustable MOE PR carbine stock create a practical platform for range use, training, and general-purpose applications. The A3 flattop receiver provides a ready mounting surface for a compatible optic.

Key features

  • Chambered for .223 Remington and 5.56 NATO for broad ammunition compatibility
  • 16-inch 4150 chrome-moly barrel with a 1:8 twist for versatile projectile stabilization
  • Mid-length direct-impingement gas system for balanced cycling characteristics
  • 15-inch M-LOK handguard provides flexible accessory mounting
  • A3 flattop receiver is optic ready for a compatible sighting system
  • Adjustable Magpul MOE PR carbine stock supports length-of-pull customization

The Diamondback Firearms DB15 Carbon combines a lightweight build with practical modular features for a versatile modern sporting rifle.

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

What caliber is the Diamondback Firearms DB15 Carbon .223 Remington 5.56 NATO?
It is chambered in .223 Remington, 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 32.75 inches, weight 6.7 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: Brown.
Is it new or used?
New, in the original packaging.
Can I buy it in Connecticut?
Yes. It ships to a licensed FFL dealer in Connecticut; you pick it up there after the background check. Connecticut buyers need a Long Gun Eligibility Certificate or pistol permit, and the Connecticut dealer will only transfer rifles and shotguns that are legal under the state's assault weapon law.
Is it in stock?
Yes, at $789.46. Orders leave within 1-2 business days; shipping is free over $999.

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