CMMG RESOLUTE MK4 | 5.56 NATO | 16.1 in | 30rd

The CMMG Resolute MK4 is a carbine-length modern sporting rifle chambered in 5.56x45mm built on CMMG’s Mk4 platform. It pairs a 16.1″ 4140CM barrel and a user-focused parts suite including the ZEROED trigger group and RipStock for predictable handling. A good optic match under $1000 for this configuration is the Vortex Strike Eagle 1-6×24, which provides a versatile sight picture for close-to-mid-range shooting.

Common applications for this rifle include range training/recreational shooting and varmint or small- to medium-game hunting where a compact, AR-pattern carbine is appropriate.

Product Specifications

• The UPC is 810144722757.
• The rifle is chambered in 5.56x45mm (.223 Rem/5.56 NATO).
• The action is Semi-Automatic.
• The barrel length is 16.1 inches.
• The rate of twist is 1:7.
• The barrel material is 4140CM.
• The muzzle device is a CMMG ZEROED muzzle brake with 1/2 x 28 threads.
• The gas system is a mid-length setup with a 0.750 non-adjustable gas block.
• The handguard is a CMMG EML15 M-LOK unit.
• The upper receiver is made from billet 6061 T6 aluminum.
• The lower receiver is a Mk4 forged 7075 T6 aluminum component.
• The stock is a CMMG RipStock and the stock color is black.
• The magazine capacity is 30 rounds and it ships with a Magpul 30rd PMAG.
• The weight is approximately 6.44 pounds.
• The overall length is 32.5 inches.

The Resolute MK4 balances a compact profile with full AR-15 accessory compatibility, delivering predictable ergonomics and controls—ambidextrous features and ZEROED components make setup and operation straightforward. The EML15 handguard offers M-LOK mounting at common positions while reducing weight compared with a full-length top rail. Whether you want a dependable range carbine or a hunting-capable AR platform, this configuration provides a practical baseline for customization.

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