The CMMG MK4 Lower Group with the Resolute Zeroed Trigger in Armor Black is a ready-to-run AR-15 lower assembly built around CMMG’s zeroed trigger package. It’s designed to provide a refined, consistent trigger experience while maintaining the compact, modular reliability expected from the MK4 AR-15 ecosystem.
Key Features
Built on the MK4 AR-15 lower group platform
Includes the Resolute Zeroed Trigger for a crisp, consistent trigger feel
Armor Black finish for durable, low-glare appearance
Assembled lower group configuration helps streamline a complete build
If you’re assembling or upgrading an AR-15 and want a tuned trigger setup with a clean MK4 lower, this CMMG lower group is a direct way to get there.
