The CMMG Resolute MK4 is a semi-automatic rifle chambered in 6mm ARC with a 16.1-inch barrel, weighing 6.4 lbs. Finish is Coyote Tan Cerakote. Ships new in box. 
 

Key Specifications 

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

Detailed Features 

The barrel is 416 stainless steel with a 1:7.5 twist rate. The upper receiver is billet 6061 T6 aluminum; the lower is forged 7075 T6 aluminum. CMMG's ZEROED Muzzle Brake handles recoil and muzzle rise. The CMMG EML15 M-LOK handguard gives you rail space for accessories without adding much bulk, and the ambidextrous charging handle works for left- and right-handed shooters. The CMMG RipStock is adjustable for length of pull. 
 
6mm ARC is a capable cartridge for both precision rifle use and hunting at moderate distances — it hits harder than 5.56mm at range while staying lighter than 6.5mm Creedmoor. Availability of brass and loaded ammo is narrower than the major calibers, worth factoring in before buying.

Discussions about the CMMG Resolute MK4 in Coyote Tan 6mm ARC break into two distinct camps — people who shoot 6mm ARC regularly and people evaluating whether to switch.

On the positive side: build quality gets consistent marks. The Coyote Tan Cerakote looks good and holds up, and the 6mm ARC cartridge earns praise for accuracy at both short and long distances. Users who've shot it at the range note the ergonomics work well and the adjustable stock accommodates different body types. The muzzle brake does its job on recoil.

Critical feedback focuses mainly on cost and the 6mm ARC ecosystem. A subset of buyers feel the rifle is priced high relative to comparable AR platforms. More practically, ammo and brass for 6mm ARC have narrower availability and higher per-round costs than 5.56mm or .308, which affects how accessible this rifle is for high-volume shooters. Accessories specific to the caliber can also be harder to source.

Overall the rifle is well-regarded for precision applications; the hesitation is usually about caliber economics, not the gun itself.