CMMG Resolute MK4 300 Blackout 16.1" AR-15 Rifle - 30AE70AAB

The CMMG Resolute MK4 delivers precision-engineered performance in 300 AAC Blackout with a 16.1-inch barrel optimized for both supersonic and subsonic ammunition. This AR-15 platform rifle combines CMMG's proven manufacturing quality with tactical features designed for versatility across multiple shooting applications.

What Makes This Different

The Resolute MK4 features CMMG's enhanced bolt carrier group with improved reliability over standard mil-spec components. The 300 Blackout chambering provides superior ballistic performance compared to 5.56 NATO in short-barrel applications, delivering 30% more energy at 100 yards. CMMG's proprietary barrel profile maintains accuracy while reducing overall weight by 4 ounces versus standard government profile barrels.

Key Features

• 16.1-inch 4140 chrome moly steel barrel with 1:7 twist rate for optimal 300 Blackout stabilization
• Mil-spec upper and lower receivers machined from 7075-T6 aluminum with Type III hard coat anodizing
• Enhanced bolt carrier group with improved gas key staking and carrier coating
• Standard AR-15 trigger group compatibility with aftermarket upgrades
• Picatinny rail system accepts standard optics and accessories
• Standard carbine buffer system with 6-position collapsible stock
• Ships with 30-round Magpul PMAG magazine

Field performance demonstrates consistent sub-2 MOA accuracy with quality ammunition, making this rifle suitable for hunting applications out to 200 yards. The 300 Blackout cartridge excels in suppressed configurations while maintaining reliable cycling with both supersonic and subsonic loads. Weather-resistant finishes and corrosion-resistant materials ensure reliable function in adverse conditions.

Technical Specs

• Caliber: 300 AAC Blackout (.300 BLK)
• Barrel Length: 16.1 inches
• Overall Length: 32.25-35.5 inches (stock collapsed/extended)
• Weight: Approximately 6.5 pounds
• Twist Rate: 1:7 inches
• Gas System: Carbine length
• Magazine Capacity: 30 rounds (included)
• Finish: Type III Hard Coat Anodized
• Manufactured: United States

The CMMG Resolute MK4 represents proven AR-15 reliability adapted for the versatile 300 Blackout cartridge. Quality components and attention to manufacturing details result in a rifle that performs consistently whether used for tactical applications, hunting, or recreational shooting.