The CMMG Resolute MK4 in .350 Legend is a semi-automatic rifle built around a caliber that's carved out a real niche for deer hunters and range shooters alike. The .350 Legend hits hard enough for whitetail while keeping recoil to a level most shooters find comfortable. 
 

Key Specifications 

• Model: Resolute MK4 
• Brand: CMMG 
• Caliber: .350 Legend 
• Action: Semi-Automatic 
• Barrel Length: 16.1 inches 
• Overall Length: 32.5 inches 
• Capacity: 10+1 rounds 
• Weight: 6.10 lbs 
• Trigger Type: Single-stage 
• Safety Feature: Ambidextrous lever 
• Stock Type: CMMG 6-position RipStock 
• Sights: Optic ready 
• Receiver Material: 7075-T6 aluminum 
   

Features 

 
The ambidextrous safety lever works equally well for left- and right-handed shooters without any modification. The RipStock adjusts across six positions, so the rifle fits a wide range of shooter sizes without compromise. Rail is included for mounting optics — no extra hardware needed to get glass on target. The muzzle brake handles recoil during faster strings of fire. 
 
At 6.10 lbs and 32.5 inches overall, the rifle stays light enough to carry all day in the field. The 7075-T6 aluminum receiver is the same material used across most quality AR-platform builds, and CMMG machines it to consistent tolerances. 
 

Usage 

 
.350 Legend is especially well-suited for hunting in states with straight-wall cartridge requirements. The Resolute MK4 also handles competitive shooting and home defense cleanly — the 10+1 capacity and semi-auto action make follow-up shots quick.

Owner feedback on the CMMG Resolute MK4 in .350 Legend is generally positive, with a few recurring caveats worth noting.

Most users praise the .350 Legend cartridge for its flexibility — it covers deer hunting and target shooting without being punishing to shoot. The semi-automatic action gets consistent marks for smooth operation. Build quality and reliability come up often in positive reviews; CMMG has a reputation for consistent manufacturing and the MK4 largely lives up to it. The optic-ready setup is well-liked since it keeps the rifle adaptable without extra work.

The main criticism is ammunition availability. While .350 Legend is growing in popularity, it still isn't as easy to find as 5.56 or .223, and the price per round is higher than those common calibers. A smaller number of shooters find the recoil slightly sharper than expected, though most rate it as manageable.

Overall sentiment leans favorable, particularly among hunters looking for a reliable straight-wall-cartridge option in an AR-platform format.