The CMMG Resolute MK4 in 6mm ARC is a modern sporting rifle chambered in a caliber that handles well across different shooting disciplines. At 6.4 lbs and 16.1 inches of barrel, it's manageable for range work or home defense without being a dedicated hunting setup. 
 

Key Specifications 

• Model: Resolute MK4 
• Manufacturer: CMMG 
• Caliber: 6mm ARC 
• Barrel Length: 16.1 inches 
• Capacity: 10 rounds 
• Weight: 6.4 lbs 
• Finish Color: Black 
• Condition: New in Box 
   

Detailed Features 

• Direct impingement operating system for consistent cycling and reduced recoil. 
• CMMG ZEROED Muzzle Brake cuts muzzle rise for faster follow-up shots. 
• Ambidextrous charging handle for left- and right-handed shooters. 
• Lightweight at 6.4 lbs with a well-designed pistol grip and adjustable stock for extended sessions.

The CMMG Resolute MK4 in 6mm ARC draws mixed but generally favorable feedback.

On the positive side, users consistently praise accuracy, especially at longer ranges. The 6mm ARC cartridge gets credit for its flat trajectory and terminal ballistics, which precision shooters tend to appreciate. Build quality is another recurring point — the materials and fit feel solid and consistent. The rifle's modularity also comes up often; people add optics, grips, and accessories without much hassle. Ergonomics get a thumbs-up across skill levels.

On the critical side, price is the most common friction point. Some shooters feel the cost is hard to justify compared to similar-class rifles, particularly for casual use. Ammunition availability is a real concern — 6mm ARC can be hard to find in high-demand periods. A few users also note that lighter alternatives exist, which matters for anyone prioritizing portability. New shooters coming from more common platforms sometimes mention a learning curve with this caliber.