The CMMG Resolute MK4 is a pistol-caliber carbine built around 9mm performance for range training, competition-style drills, and practical duty use. Its design emphasizes modularity and compatibility with AR-style components to give shooters a flexible platform for multiple roles.

Constructed as a carbine-length rifle, the Resolute MK4 pairs a 9mm radial delayed blowback upper system with CMMG’s AR conversion magazine solution to enable fast caliber and magazine changes. The rifle is fitted with CMMG’s RIPSTOCK and the EML 15 handguard to balance ergonomics with accessory mounting options.

Key Specifications

The caliber is 9mm.
The barrel length is 16.1 inches.
The standard magazine capacity is 30 rounds.
The finish is Titanium.
The operating system is a 9mm radial delayed blowback upper.
The rifle uses 9mm AR conversion magazines for feeding.
The upper and magazine system is compatible with an AR15 lower receiver to enable caliber swaps.
The handguard model is the EML 15.
The handguard includes M-LOK attachment slots at the 3, 6, and 9 o’clock positions and a section at 12 o’clock for accessories.
The rifle ships fitted with CMMG’s RIPSTOCK for improved ergonomics.

The CMMG Resolute MK4 9mm blends modular AR-style compatibility with pistol-caliber practicality for shooters seeking a versatile carbine. Buy the CMMG Resolute MK4 9mm online today as a reliable option for range work, training, and practical shooting applications.