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Diamondback Firearms DB15 Carbine Configuration .300 Blackout Olive Drab Green Rifle

The Diamondback Firearms DB15 is a semi-automatic rifle chambered in .300 Blackout and configured for versatile carbine use. It features a 16-inch threaded barrel with a 5/8x24 thread pattern, a 15-inch M-LOK handguard, and an optic-ready flat-top receiver. The forged 7075-T6 aluminum receiver is paired with a collapsible Magpul MOE carbine stock and Magpul MOE grip. A two-position thumb safety, A2 flash hider, and 30+1 capacity complete the practical configuration. One 30-round PMAG is included.

Key features

  • .300 Blackout chambering supports a wide range of ammunition and applications
  • 16-inch threaded barrel with a 5/8x24 thread pattern accommodates compatible muzzle devices
  • 15-inch M-LOK handguard provides flexible accessory mounting
  • Optic-ready flat-top receiver supports red dots and other compatible aiming systems
  • Collapsible Magpul MOE carbine stock allows length-of-pull adjustment
  • 30+1 capacity with one included 30-round PMAG

The Diamondback DB15 combines adaptable .300 Blackout performance with practical furniture and accessory compatibility for range, recreational, and defensive applications.

Diamondback Firearms DB15 Carbine Configuration .300: quick facts

What caliber is the Diamondback Firearms DB15 Carbine Configuration .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 16 inches, overall length 32 inches, weight 6.6 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: Olive Drab Green.
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 $755.39. Orders leave within 1-2 business days; shipping is free over $999.

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