The CMMG Resolute MK4 is a carbine-length semi-automatic rifle built to bring large-bore .338 ARC ballistic performance to an AR-platform chassis. It ships with CMMG ZEROED components and the adjustable RipStock for a compact, controllable package. The EML 15 handguard provides M-LOK attachment points at 3, 6, and 9 o’clock and a trimmed top section for a slim profile. The platform maintains AR15 parts compatibility where possible, including bolt commonality with 6.5 Grendel.
Key Specifications
- The rifle is chambered in .338 ARC for large-bore AR performance.
- The barrel measures 16.1 inches and is threaded.
- The magazine capacity is 10 rounds in a detachable magazine.
- The action is Semi-Auto.
- The listed weight is approximately 6.2 lbs.
- It features a CMMG RipStock (adjustable) for ergonomic adjustability.
- The handguard is an EML 15 with M-LOK slots for accessory mounting.
- The muzzle device is a CMMG Zeroed muzzle brake.
- The trigger is a Zeroed single-stage design.
- The finish is Cerakote (blued/black).
Configured to deliver versatile ballistic performance in a compact AR-style package, the Resolute MK4 pairs a threaded 16.1-inch barrel and adjustable RipStock with CMMG’s ZEROED parts for consistent handling and modularity. Its AR-compatibility and practical feature set make it well suited to range work, load development, and shooters who want a large-bore cartridge in a maneuverable rifle platform.
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