CMMG Resolute Mk4 300 Blackout Semi-Auto Rifle 16.1" Coyote Brown

The CMMG Resolute Mk4 delivers precision performance in 300 Blackout with enhanced ergonomics and reliability improvements over standard AR-15 platforms. This semi-automatic rifle features CMMG's proven operating system with optimized gas flow for both supersonic and subsonic ammunition.

What Makes This Different

The Resolute Mk4 incorporates CMMG's enhanced bolt carrier group with improved gas key staking and premium materials throughout the action. The 16.1-inch barrel provides optimal velocity for 300 Blackout cartridges while maintaining compact handling characteristics. CMMG's quality control standards exceed mil-spec requirements, resulting in tighter tolerances and more consistent performance compared to entry-level AR platforms.

Key Features

• 16.1-inch 4140 chrome moly vanadium steel barrel with 1:7 twist rate
• Enhanced bolt carrier group with improved gas key and premium coatings
• Cerakote Coyote Brown finish for corrosion resistance and durability
• Standard AR-15 magazine compatibility accepts all STANAG pattern magazines
• Picatinny rail system accommodates optics and accessories
• Ambidextrous safety selector for enhanced manipulation
• CMMG RipStock collapsible buttstock with multiple length of pull positions

Field testing demonstrates consistent accuracy with both 110-grain supersonic and 220-grain subsonic loads. The rifle functions reliably across temperature extremes from -20°F to 140°F without lubrication changes. Competition shooters report sub-2 MOA groups at 100 yards with quality ammunition. The enhanced trigger system provides a crisp break suitable for precision applications while maintaining reliability for tactical use.

Technical Specs

• Caliber: 300 AAC Blackout (.300 BLK)
• Barrel Length: 16.1 inches
• Overall Length: 32.25-35.5 inches (collapsed to extended)
• Weight: 6.5 pounds (unloaded)
• Twist Rate: 1:7 inches
• Gas System: Carbine length
• Magazine Capacity: 30 rounds (standard AR-15 magazines)
• Finish: Cerakote Coyote Brown
• Manufactured: United States

The Resolute Mk4 represents CMMG's commitment to manufacturing excellence with enhanced components throughout the platform. Professional armorers recognize the improved specifications and consistent quality control that separate this rifle from budget alternatives.