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Diamondback Firearms Carbon DB15 Pistol Carbon Series .300 Blackout Diamondback Black Pistol

The Diamondback Firearms Carbon DB15 Pistol is an AR-pattern pistol chambered in .300 Blackout and configured for compact handling. It features a ten-inch threaded barrel with a 5/8x24 muzzle thread, a nine-inch M-LOK rail, and a forged 7075-T6 aluminum receiver. The SBA3 pistol stabilizing brace and Magpul MOE pistol grip provide a practical interface for control, while the two-position thumb safety supports safe operation. This model is supplied without sights, allowing the owner to configure the receiver rail with a preferred aiming system. One 30-round PMAG is included.

Key features

  • Ten-inch .300 Blackout barrel supports both supersonic and subsonic ammunition configurations
  • 5/8x24 threaded muzzle accommodates compatible muzzle devices and suppressors
  • Nine-inch M-LOK rail provides flexible mounting space for accessories
  • SBA3 pistol stabilizing brace and Magpul MOE grip improve handling and control
  • Forged 7075-T6 aluminum receiver offers a durable lightweight foundation
  • Includes one 30-round PMAG

The Carbon DB15 Pistol combines a compact AR configuration with adaptable accessory mounting and a threaded .300 Blackout barrel.

Diamondback Firearms Carbon DB15 Pistol Carbon Series .300: quick facts

What caliber is the Diamondback Firearms Carbon DB15 Pistol Carbon Series .300?
It is chambered in .300 Blackout.
How many rounds does it hold?
30+1 rounds; magazines included: 1.
How big and heavy is it?
Barrel length 10 inches, overall length 28.5 inches, weight 5.7 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: Diamondback Black.
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 pistol permit or Handgun Eligibility Certificate, and the Connecticut dealer will only transfer this model if it and its magazines (10 rounds or fewer) are legal in Connecticut.
Is it in stock?
Yes, at $821.39. Orders leave within 1-2 business days; shipping is free over $999.

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