The CMMG Resolute Mk4 Rifle in 5.7x28mm is a Coyote Tan carbine-length AR-pattern rifle with a 16.1-inch barrel (brand part no. 54A3F0FCT). Instead of pistol magazines it uses CMMG’s 5.7 magazines, which fit standard AR15 magwells. It comes with an EML 15 handguard with M-LOK slots, a ZEROED linear compensator, ambidextrous safety and drop-in trigger. It is a modular rifle for shooters who want 5.7x28mm in an AR platform.

Key Specifications

• The chambering is 5.7x28mm, which CMMG pairs here with an AR15-pattern platform.
• Barrel length is 16.1 inches in a carbine-length configuration.
• A ZEROED linear compensator sits on the muzzle to tame recoil and muzzle rise.
• The handguard is the EML 15 with M-LOK slots at 3, 6, 9 and 12 o’clock, trimming weight and giving a place to mount accessories.
• The trigger is a ZEROED drop-in trigger for a clean, consistent pull.
• The safety is a ZEROED 60/90 degree ambidextrous unit that works from either side.
• The magazines are CMMG 5.7 magazines that fit standard AR15 magwells.

Frequently Asked Questions

What magazines does the Resolute Mk4 use? It uses CMMG’s 5.7 magazines, which fit in standard AR15 magwells rather than pistol-pattern magazines.

What muzzle device does it have? It has a ZEROED linear compensator.

Buy the CMMG Resolute Mk4 Rifle, 5.7x28mm, 16.1-Inch Barrel, Linear Compensator, Coyote Tan

The Resolute Mk4 pairs the 5.7x28mm cartridge with a familiar AR layout, in a Coyote Tan finish that stands out on the range. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles.