CMMG RESOLUTE MK4 .300 Blackout 16.1 inches MDBRZ Rifle

The CMMG RESOLUTE MK4 .300 Blackout 16.1 inches MDBRZ rifle represents purpose-built suppressor-ready architecture designed for tactical operators, law enforcement, and military professionals who demand subsonic capability without compromise. The .300 Blackout cartridge excels in short-barrel platforms where supersonic rifle rounds lose velocity and energy; this 16.1-inch configuration delivers optimal dwell time for both subsonic and supersonic ammunition while maintaining a compact, maneuverable profile ideal for close-quarters combat, breaching operations, and specialized enforcement missions.

Built on the proven MK4 platform, this rifle integrates a mid-length gas system optimized for the intermediate cartridge's ballistics, ensuring reliable cycling across ammunition variants and suppressed fire conditions. The modular design accommodates standard AR-pattern accessories, allowing rapid reconfiguration for mission-specific loadouts—rail-mounted optics, lights, and sound suppressors integrate seamlessly into the Picatinny infrastructure. At 10.2 pounds unloaded, the rifle balances firepower with portability, a critical factor in urban and confined-space operations where every ounce impacts operator fatigue during extended deployments.

This configuration benefits agencies and operators prioritizing stealth, barrier penetration, and reduced signature during sensitive operations—hostage rescue, VIP protection, and low-collateral-damage scenarios where subsonic capability eliminates the sonic crack of supersonic fire. The MDBRZ (Midnight Bronze) finish resists corrosion in adverse weather and undergoes rigorous testing for durability. Compatibility with standard .300 Blackout ammunition, AR-15 components, and both suppressed and unsuppressed fire makes this platform a versatile foundation for specialized tactical arsenals where precision, reliability, and mission flexibility are non-negotiable.