CMMG Resolute MK4 5.56 NATO 16.1" Barrel Midnight Bronze Rifle

The CMMG Resolute MK4 delivers precision engineering in a battle-tested platform designed for serious shooters who demand reliability and accuracy. This 5.56 NATO rifle combines CMMG's proven manufacturing expertise with premium components to create a versatile firearm suitable for multiple applications.

What Makes This Different

The Resolute MK4 features CMMG's enhanced bolt carrier group with improved materials and tighter tolerances compared to standard mil-spec components. The 16.1-inch barrel provides optimal velocity for 5.56 NATO ammunition while maintaining maneuverability. The midnight bronze Cerakote finish offers superior corrosion resistance and durability, rated for over 3,400 hours of salt spray testing according to ASTM standards.

Key Features

• 16.1-inch 4150 chrome moly vanadium steel barrel with 1:7 twist rate
• Midnight bronze Cerakote finish throughout for enhanced durability
• CMMG enhanced bolt carrier group with improved materials
• M-LOK compatible handguard for accessory mounting
• Ambidextrous safety selector for versatile operation
• Standard AR-15 magazine compatibility (30-round capacity)
• Adjustable gas block for reliable cycling with various loads

Field performance demonstrates consistent accuracy with quality ammunition, typically achieving 1.5-2 MOA groups at 100 yards with match-grade loads. The gas system cycles reliably with both standard 55-grain and heavier 77-grain projectiles. The rifle functions effectively in temperature ranges from -40°F to 140°F and maintains zero retention through extended firing sessions.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16.1 inches
• Overall Length: 32.25-35.5 inches (adjustable stock)
• Weight: 6.8 pounds (unloaded)
• Twist Rate: 1:7 inches
• Gas System: Mid-length
• Finish: Midnight Bronze Cerakote
• Stock: 6-position collapsible
• Handguard: M-LOK compatible aluminum
• Manufactured: United States

The CMMG Resolute MK4 represents solid engineering backed by a manufacturer's warranty and decades of AR-platform experience. The midnight bronze finish sets it apart visually while providing measurable performance advantages in corrosive environments.