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
The "Nub Sub:" KelTec's Ultra-Compact SUB-SDP
KelTec is expanding its SUB2000 line yet again with the SUB-SDP, a foldable, braced pistol that KelTec folks colloquially refer to as the "NUB SUB."
Gun of the Week: EAA Girsan Witness2311 CMXX
One of the latest options in EAA's line of 2011-style handguns is the Witness2311 CMXX, which incorporates a large, single-port compensator at the muzzle end.
The Armed Citizen® July 24, 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.
Review: Freedom Ordnance FM-9D
New small arms with groundbreaking designs are rare in an industry where new products tend to be evolutionary rather than revolutionary. Fortunately, Freedom Ordnance marches to the beat of a different drum and invested its creative energy into developing the unique, innovative FM-9D.
Number of Retail FFLs Dwindling
The number of retail outlets with an FFL Type 01 license to sell firearms has declined by more than 13 percent in just the last five years.
Ammunition Depot and NRA Partner to Expand Support for Second Amendment Litigation
The NRA has invested more than $3 million in California Second Amendment litigation since 2021 and has provided support for Rhode v. Bonta; Ammunition Depot is launching a checkout donation option to help fund ongoing legal efforts.
Interests
SECTIONS
IN THE SPOTLIGHT
EXPLORE MORE NRA PUBLICATIONS
