CMMG Resolute Mk4 350 LEG 16.1" Rifle - Armor Black Finish

The CMMG Resolute Mk4 350 Legend rifle delivers the ballistic punch you need in a carbine-length package built for hunters facing legal restrictions on caliber choice. Chambered in 350 Legend—Winchester's fast, straight-walled round engineered for deer-sized game with less recoil than .30-30 or .243 Winchester—this 16.1" rifle threads the needle between the reach of a full-size hunting rifle and the maneuverability you want in brush or tight blinds. The Resolute line answers a real problem: when a pistol-caliber carbine feels underpowered and a traditional rifle feels overbuilt, CMMG's Mk4 AR15-platform solution lands right in the sweet spot.

Built on the proven Mk4 platform with a direct impingement operating system, the Resolute runs a 4140CM barrel with 1:16 twist and a non-adjustable 0.750" carbine gas block tuned for reliable function. The billet upper and forged lower receiver are finished in durable Cerakote armor black. You'll find CMMG's ZEROED parts throughout—muzzle brake, ambi charging handle, drop-in trigger, and 60/90-degree safety selector—paired with the RipStock for a solid cheek weld and the EML15 handguard offering M-LOK attachment at 12, 3, 6, and 9 o'clock without the weight penalty of a full-length Picatinny rail. At just 6.1 lbs and 32.5" overall, it's light enough to carry all day and compact enough for vehicles and tight spaces.

This is a hunter's rifle designed for states with straight-wall cartridge rules—caliber-restricted zones common in the Midwest where lever-action territory meets modern sporting rifle practicality. The included 10-round magazine, ambi controls, and modular rail system mean you can dress it for your hunt without fuss. Whether you're working from a stand, glassing prairie, or hunting from a truck, the Resolute Mk4 in 350 Legend gives you the performance and handling that bigger rifles can't match.

Key Features

• 350 Legend caliber—straight-walled round engineered for deer hunting with less recoil than .30-30 or .243 Winchester
• 16.1" 4140CM barrel with 1:16 twist, tuned for the cartridge
• Direct impingement with carbine-length gas system for reliable cycling
• Lightweight at 6.1 lbs; compact 32.5" overall length for easy carry and vehicle stow
• Billet 6061 T6 aluminum upper and forged 7075 T6 aluminum lower receiver
• EML15 M-LOK handguard with mounting points at 12, 3, 6, and 9 o'clock
• CMMG ZEROED components: muzzle brake, ambi charging handle, drop-in trigger, trigger guard, and 60/90-degree safety
• RipStock with ambi sling plate for secure mounting and cheek weld
• Armor black Cerakote finish
• Includes 10-round magazine

Specifications

Frequently Asked Questions

Is the CMMG Resolute Mk4 350 Legend legal for hunting in straight-wall cartridge states?

The 350 Legend is a straight-walled centerfire cartridge engineered specifically to meet the requirements of states with caliber restrictions. Always verify your local hunting regulations before purchase, as laws vary by jurisdiction and game type.

What's included with this rifle?

The rifle ships with one 10-round magazine. The CMMG ZEROED muzzle brake, charging handle, trigger, trigger guard, safety selector, and RipStock are all factory-installed.

Can I mount a scope or red dot on the EML15 handguard?

The EML15 handguard features M-LOK slots at the 12, 3, 6, and 9 o'clock positions for accessory mounting. For optics, you'll need to use an upper receiver Picatinny rail or add an M-LOK-compatible scope mount to the handguard's top slot.

How does the 350 Legend compare to .30-30 Winchester or .243 Winchester?

According to Winchester's engineering, the 350 Legend is the fastest straight-walled hunting cartridge and delivers more velocity and energy downrange than .30-30 Winchester, with less recoil than .243 Winchester. It was purpose-built for deer-sized game in states that restrict hunting to straight-walled cartridges.