The CMMG RESOLUTE MK4 chambered in 6.5 Grendel is a modern sporting rifle built to deliver efficient medium- to long-range performance from an AR-platform design. It is appropriate for range use and precision-oriented shooting where the 6.5 Grendel cartridge’s ballistics are desired.
Built on a forged Mk4 lower and a billet 6061 T6 upper, this configuration pairs a 16.1-inch barrel with a 1:8 rate of twist and a Cerakote Armor Black finish. Ergonomics and control are addressed with CMMG ZEROED ambidextrous controls, the RipStock buttstock, and the CMMG EML15 M-LOK handguard for modular accessory mounting.
Key Specifications
- The caliber is 6.5 Grendel.
- The action is Semi-Automatic.
- The barrel length is 16.1 inches, offering a balance between accuracy and maneuverability.
- The rate of twist is 1:8, suitable for a range of medium-weight 6.5 Grendel projectiles.
- The magazine capacity is 10 rounds.
- The rifle uses a detachable magazine.
- The handguard is a CMMG EML15 M-LOK for mounting accessories.
- The stock is a CMMG RipStock to provide adjustable ergonomics.
- The muzzle threads are 5/8-24 to accept compatible muzzle devices.
- The finish is Cerakote Armor Black and the listed weight is 6.44 lbs.
The RESOLUTE MK4 combines CMMG engineering with 6.5 Grendel performance and modular features, presenting a practical option within CMMG firearms for shooters focused on precision and adaptability.








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