The CMMG Resolute Mk4 in 5.56x45mm (MPN 55A9D0B-MB) is chambered in one of the most prolific rifle calibers in the world, having served militaries, hunters, and recreational shooters for decades. CMMG builds the 16.1-inch barrel with a 1:7-inch twist and fits the EML handguard, which carries full-length M-LOK slots on both sides and the bottom, plus M-LOK sections between the top Picatinny rail. The rifle carries the full ZEROED parts suite: pistol grip, drop-in trigger, 60/90-degree ambidextrous safety, ambidextrous mag catch, extended mag release button, ambidextrous charging handle, bolt catch, polymer dust cover, and muzzle brake, finished in Midnight Bronze. It ships with a Magpul 30-round PMAG. Among AR-platform rifles in the AR rifles category, the Resolute Mk4 favors shooters who want a fully ambidextrous 5.56 build with a distinctive finish.

Key Specifications

• Chambered in 5.56x45mm/.223 Rem with a 1:7-inch rate of twist.
• Features a 16.1-inch barrel.
• The handguard carries full-length M-LOK slots on both sides and the bottom.
• The safety selector is a CMMG ZEROED 60/90-degree ambidextrous design.
• The mag catch is ambidextrous with an extended release button.
• The charging handle is ambidextrous.
• Finished in Midnight Bronze.
• Feeds from a Magpul 30-round PMAG, included.
• Weighs in at 41 inches overall length.

Frequently Asked Questions

Are the controls ambidextrous? Yes, the safety, mag catch, and charging handle are all ambidextrous.

What finish does this rifle have? Midnight Bronze.

What magazine ships with this rifle? A Magpul 30-round PMAG.

Buy the CMMG Resolute Mk4 5.56, Midnight Bronze

A fully ambidextrous 5.56 build with a distinctive finish is exactly what the Resolute Mk4 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.