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.