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Daniel Defense DDM4 MK12 5.56 NATO Rifle

The Daniel Defense DDM4 MK12 is a semi-automatic rifle built around an 18-inch cold hammer forged stainless steel barrel treated with a durable salt bath nitride finish. Its rifle-length gas system and MK12 low-profile gas block follow United States Special Operations Command specifications, while the Geissele SSA two-stage trigger supports a controlled and consistent trigger press. The DDM4 12-inch rail provides a continuous upper rail for mounting an optic and offers an extended sight radius for compatible backup sights. A Daniel Defense Improved Flash Suppressor completes the muzzle configuration.

Key features

  • 18-inch cold hammer forged stainless steel barrel with salt bath nitride finish
  • Rifle-length gas system with SOCOM-specification MK12 low-profile gas block
  • Geissele SSA two-stage trigger for a smooth, predictable trigger press
  • DDM4 12-inch rail with continuous upper rail for flexible optic mounting
  • 1:7 barrel twist optimized for stabilizing a broad range of 5.56 NATO projectiles
  • Daniel Defense Improved Flash Suppressor

The Daniel Defense DDM4 MK12 combines a precision-oriented barrel, rifle-length operating system, capable two-stage trigger, and adaptable rail platform in a proven 5.56 NATO rifle configuration.

Daniel Defense DDM4 MK12 5.56 NATO Rifle: quick facts

What caliber is the Daniel Defense DDM4 MK12 5.56 NATO Rifle?
It is chambered in 5.56 NATO.
How many rounds does it hold?
20+1 rounds.
How big and heavy is it?
Barrel length 18 inches, overall length 35.25 inches, weight 7.62 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 Missouri?
Yes. It ships to a licensed FFL dealer in Missouri; you pick it up there after the background check. Missouri buyers pick this up at a licensed dealer after a NICS check, with no permit to purchase and no waiting period; dealers sell rifles and shotguns from age 18.
Is it in stock?
Yes, at $2838.19. Orders leave within 1-2 business days; shipping is free over $999.

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