The CMMG Resolute Mk4 (brand part no. 34A120FTNG) is chambered in .338 ARC, a cartridge built to combine AR-15-platform convenience with the stopping power of a large-bore bullet, finished here in Tungsten Cerakote. It strives to emulate the sub- or supersonic versatility of the now-ubiquitous .300 Blackout cartridge while delivering more energy on target and requiring less gas system tuning when switching between suppressed and unsuppressed fire. The CMMG Ripstock and Zeroed Grip round out an ergonomic, fast-handling package, and the CMMG Zeroed safety offers a 60- or 90-degree throw to match shooter preference. It suits hunters and precision-minded shooters who want more downrange energy from a semi-automatic AR-pattern rifle.

Key Specifications

• Chambered in .338 ARC, a large-bore cartridge built for AR-15-platform compatibility.
• Rifling twist of 1:8 inches stabilizes .338 ARC bullet weights.
• Fitted with a 16.1-inch, black nitride-threaded barrel.
• Ships in a 10+1 capacity configuration.
• The Tungsten Cerakote aluminum receiver carries a full Picatinny top rail and M-LOK handguard.
• Fitted with the CMMG Zeroed safety, adjustable between 60- and 90-degree throw.
• Finished with the CMMG Ripstock in Tungsten polymer.
• Uses the CMMG Zeroed grip for improved ergonomics.
• Runs a semi-automatic AR-pattern operating system.

Frequently Asked Questions

What makes .338 ARC different from .300 Blackout? It delivers more energy on target and needs less gas system tuning when switching between suppressed and unsuppressed fire.

What is special about the safety selector? The CMMG Zeroed safety can be set to either a 60- or 90-degree throw to match shooter preference.

Buy the CMMG Resolute Mk4 .338 ARC Rifle

This hard-hitting, Tungsten-finished .338 ARC rifle is ready to ship. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and check out more CMMG rifles alongside other semi-auto rifles.