The CMMG Resolute MK4 in .300 AAC Blackout sets the standard for lightweight precision in the AR-15 platform. Engineered with enhanced features from butt to muzzle, this rifle delivers uncompromising performance. At its core, the barrel is constructed from 4140 chrome moly steel, ensuring exceptional accuracy with a salt bath nitride finish for long-lasting durability. The threaded muzzle includes a Zeroed muzzle brake, effectively reducing recoil for quick follow-up shots. A robust cerakote finish protects the rifle against harsh elements, ensuring reliability in any environment. CMMG's commitment to user-friendly design is evident with the inclusion of Zeroed accessories such as an ambidextrous magazine catch, safety selector and charging handle, facilitating effortless operation. The M-LOK handguard features slots at the 3, 6 and 9 o'clock positions, along with picatinny rail slots for versatile accessory mounting options, including sights, bi-pods, lights, lasers and grips. Notably, this model incorporates a 14.50 inches barrel with a pinned and welded muzzle brake, achieving an overall length of 16.10 inches without requiring NFA/SBR classification. This configuration optimizes maneuverability without sacrificing barrel performance. In summary, the CMMG Resolute MK4 stands as a pinnacle of craftsmanship and functionality, destined to impress shooters with its precision, reliability and ergonomic design.