Among the myriad introductions at SHOT Show 2019 was a straight-wall rifle cartridge dubbed 350 Legend. The leading company behind the charge is Winchester, but it wasn’t until a day later that CMMG Inc., announced not only a rifle, but a series of direct-impingement semi-automatics compatible for use with this newly designed cartridge. At the top tier of the series, the Resolute 300 MK4 boasts forged aluminum receivers featuring Cerakote finishes and components AR builders know the company for. To learn more, watch our NRA Gun of the Week video hosted by American Rifleman’s Kelly Young.
Specifications:
Manufacturer: CMMG Inc.
Model: Resolute 300 MK4
Action Type: gas-operated, semi-automatic center-fire rifle
Chambering: 350 Legend
Receivers: forged aluminum, Cerakote Sniper Grey finish
Barrel: 16.1”, chrome-moly steel
Stock: CMMG RipStock; five-position adjustable
Magazine: 10-round detachable box
Sights: none; Picatinny rail
Trigger: two-stage; 4-lb., 8-oz. pull
Weight: 6 lbs., 5 ozs.
MSRP: $1,550
Additional Reading:
SHOT Show 2019: Winchester 350 Legend Ammunition
Tested: CMMG Guard Pistol Caliber Carbines
SHOT Show 2019: CMMG Resolute Carbines in 350 Legend
Tested: CMMG MK4 Banshee .22 LR Pistol
Top 5 Reasons to Shop for ARs Right Now
NRA Gun of the Week: CMMG Resolute 300 MK4 Rifle
More like this from around the NRA
Latest
Political Report | America at 250: Celebrate Our History
It isn’t news to the patriotic members of the National Rifle Association that July 4, 2026, marks the 250th anniversary of the Declaration of Independence and the founding of the United States of America.
Benelli Updates Its M2 Field Shotgun
Over the years, Benelli shotguns have gotten subtle updates that have made their reliability and usability even better. New for 2026, Benelli’s M2 Field models are getting added features for better comfort and control.
It’s OK to Have Fun
A gun is a serious tool, but it can also be an object of joy.
Gun of the Week: Springfield Armory Model 2020 Boundary
While the company's initial Model 2020 Waypoint design was intended to be more of a precision platform, Springfield has since come out with several field-ready variants of the Model 2020, including the Boundary.
Standing Guard | The NRA and Freedom’s 250th
A quarter of a millennium ago this July 4, John Hancock was the first to sign the Declaration of Independence.
The Armed Citizen® June 19, 2026
Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.
Interests
New for 2026: EAA Balikli BLK Bolt-Action Rifles | An Official Journal Of The NRA
- SK Guns Marks America’s 250th With Limited-Run 1911 Commander | An NRA Shooting Sports Journal
- Safariland and Travis Haley Reengineered the Gun Belt From the Buckle Out | An NRA Shooting Sports Journal
- Federal’s 6.5 Creedmoor +Peak Adds 300 FPS to a Cartridge You Probably Already Shoot | An NRA Shooting Sports Journal
SECTIONS
IN THE SPOTLIGHT
EXPLORE MORE NRA PUBLICATIONS
