CMMG Resolute Mk4 Rifle, 5.56 NATO

The CMMG Resolute in 5.56x45mm NATO (brand part no. 55AC780-AB) is a semi-automatic AR-platform rifle built on the ultra-capable Mk4 AR15 platform, giving shooters one of the most prolific, proven calibers in the world in a carbine that accepts virtually any AR15 accessory. CMMG fits the Resolute with the full suite of ZEROED parts and accessories along with the legendary RIPSTOCK, and tops it with the new EML 15 M-LOK handguard for a lighter, more streamlined feel. Among AR-platform rifles in the AR rifles category, the Resolute favors shooters who want a proven 5.56 carbine that never feels out of place.

Key Specifications

• Chambered in 5.56x45mm NATO, also compatible with .223 Rem.
• Built on CMMG Mk4 AR15 platform.
• Fitted with the legendary RIPSTOCK adjustable stock.
• Equipped with ZEROED parts and accessories throughout.
• Wears the EML 15 M-LOK handguard.
• Handguard has M-LOK slots at 3, 6, 9, and 12 o-clock with Picatinny sections for sights and accessories.
• Compatible with virtually any AR15 aftermarket accessory.
• Operates as a semi-automatic carbine-length rifle.

Frequently Asked Questions

What ammunition does this rifle use? 5.56x45mm NATO, also safe with .223 Remington.

What stock does this rifle use? The legendary CMMG RIPSTOCK, adjustable to the shooter.

Can I use standard AR15 accessories? Yes, this Resolute accepts virtually any AR15-compatible component.

Buy the CMMG Resolute Mk4 5.56

A proven 5.56 carbine that accepts virtually any AR15 accessory is exactly what the Resolute delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.