CMMG Resolute MK4 .300 Blackout 16.1" Midnight Bronze

CMMG Resolute MK4 .300 Blackout Rifle

The .300 Blackout cartridge represents a thoughtful evolution in modern rifle design. Originally developed to deliver heavy .30-caliber performance from shorter barrels while maintaining subsonic velocities when suppressed, this round leverages the existing AR15 platform and ammunition components familiar to shooters everywhere.

Purpose-Built Design

The Resolute MK4 is engineered for those who value versatility. Whether you're considering suppressed shooting, home defense, or simply exploring what modern .300 Blackout ammunition can deliver, this rifle provides a capable platform. The 16.1" barrel strikes a practical balance between velocity and handling.

Ergonomic Features

CMMG equipped this rifle with ambidextrous controls throughout:

• Ambi safety lever with 60/90 degree positions
• Ambi mag catch for left and right-handed operation
• Ambi charging handle for shooter preference
• Extended mag release button for faster reloads

Handguard & Accessory Mounting

The EML handguard provides extensive M-LOK slots on both sides, the bottom, and between the top Picatinny rail sections. This gives you genuine flexibility for mounting lights, lasers, or other tactical accessories.

Additional Components

• ZEROED pistol grip and drop-in trigger
• Polymer dust cover
• AR15-pattern bolt catch and muzzle brake
• Includes one 30-round Magpul PMAG

The Resolute MK4 delivers practical performance in a modern, user-friendly package.