CMMG 30B12BBAB Resolute MK4 5.56 NATO 16.1" Rifle

The CMMG 30B12BBAB Resolute MK4 5.56 NATO 16.1" rifle represents a purpose-built platform for shooters who demand reliability, modularity, and performance in a compact package. Designed to bridge the gap between duty rifle precision and carbine maneuverability, this 5.56 NATO rifle excels in home defense, tactical training, and professional law enforcement applications where rapid target engagement and platform dependability are non-negotiable. At 4.77 lbs, the Resolute MK4 delivers a lightweight handling experience without sacrificing structural integrity—a critical advantage during extended operations or dynamic shooting scenarios.

CMMG's proven engineering delivers a direct impingement system optimized for the 5.56 NATO cartridge, enabling consistent cycling and minimal maintenance in the field. The 16.1-inch barrel strikes a practical balance between muzzle velocity and overall weapon length, making the Resolute MK4 exceptionally maneuverable in tight quarters while maintaining effective range for intermediate to mid-distance engagements. The rifle's modular design accommodates standard AR-pattern accessories and optic mounts, allowing shooters to configure their platform for specific mission profiles—whether equipped with red dots, magnified optics, or night vision-compatible systems. This platform's reputation for hard-use durability has been validated across law enforcement and military training environments.

The CMMG Resolute MK4 benefits professionals requiring a sub-5-lb rifle capable of sustained accuracy and reliability under stress. Whether deployed for home defense, tactical team training, or precision rifle courses, this platform integrates seamlessly with industry-standard 5.56 NATO ammunition and accepts common AR-15 furniture and upgrades. Operators should verify compatibility with their preferred optics mounting system before deployment, though the rifle's modern flat-top receiver design supports both Picatinny and direct-attach mounting solutions. For shooters seeking a proven, lightweight 5.56 rifle for sale that balances ergonomics with field-proven performance, the CMMG 30B12BBAB delivers tactical capability in a manageable package.