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Availability: In Stock
Current Stock: Out of stock
The CMMG Resolute Mk4 5.56mm rifle is a no-nonsense carbine built for hunters, sport shooters, and anyone who needs a versatile, dependable platform without excess bulk. Chambered in 5.56x45mm—one of the most proven and accessible rifle rounds in the world—this 16.1" rifle splits the difference between maneuverability and effective range, making it equally at home in the field, at the range, or as a core addition to any collection. With a direct impingement operating system and a mid-length gas system, the Resolute delivers reliable performance across a wide range of ammunition.
Built on CMMG's Mk4 platform, this rifle accepts standard AR15 accessories, so you're not locked into proprietary parts or limited by compatibility. The coyote tan Cerakote finish is both functional and distinctive. The EML15 M-LOK handguard strikes a practical balance—M-LOK slots at the 3, 6, 9, and 12 o'clock positions give you mounting options for lights, lasers, or grips while keeping weight down compared to full-length rail systems. All the essentials are here: a CMMG ZEROED muzzle brake, ambi charging handle, ambi safety selector, and RipStock carbine buffer tube with sling attachment plate.
This is a rifle that does its job without pretense. The forged 7075-T6 aluminum lower receiver and billet upper receiver provide a solid foundation, while the 4140CM chrome-moly barrel is threaded 1/2 x 28 for future muzzle device changes if you want them. Topped with a ZEROED drop-in trigger and packaged with a 30-round Magpul PMAG, the Resolute Mk4 is ready to go. At 6.4 lbs and 32.5" overall length, it's compact enough to handle but doesn't sacrifice the ballistic advantage of a longer sight radius and barrel.
Whether you're building your first serious rifle or adding a proven work gun to your safe, the Resolute Mk4 5.56mm delivers everything you need in a straightforward, no-drama package.
| Caliber | 5.56x45mm |
| Barrel Length | 16.1" |
| Barrel Twist | 1:7 |
| Barrel Material | 4140CM Chrome-Moly |
| Barrel Contour | MT |
| Overall Length | 32.5" |
| Weight | 6.4 lbs |
| Operating System | Direct Impingement |
| Gas System Length | Mid-length |
| Gas Block | 0.750" Non-Adjustable |
| Upper Receiver | Billet 6061-T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075-T6 Aluminum |
| Platform | Mk4 |
| Handguard | CMMG EML15 M-LOK |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 1/2 x 28 |
| Charging Handle | CMMG ZEROED Ambi |
| Trigger | ZEROED Drop-In |
| Trigger Guard | CMMG ZEROED |
| Safety Selector | CMMG ZEROED 60/90 Degree Ambi |
| Pistol Grip | CMMG ZEROED |
| Stock/Brace | CMMG RipStock |
| Receiver Extension | CMMG 6 Position Fastback w/Ambi Sling Plate |
| Buffer Type | Carbine |
| Finish | Coyote Tan Cerakote |
| Magazine Included | Magpul 30-round PMAG |
The Resolute Mk4 is built on the Mk4 platform and accepts standard AR15 accessories, including grips, stocks, optics mounts, lights, and rail-mounted gear. The EML15 handguard features M-LOK attachment points, so you can add lights, lasers, vertical grips, or other M-LOK accessories. The muzzle device is threaded 1/2 x 28, allowing you to swap or upgrade the brake if needed.
Yes. The 5.56x45mm cartridge is widely used by hunters for varmint and small- to medium-game hunting, and the 16.1" barrel provides enough velocity and accuracy for those purposes. The rifle's compact size makes it easy to handle in the field, and the M-LOK handguard allows you to attach optics, lights, or other gear to suit your hunting setup.
The CMMG Resolute Mk4 comes with a 30-round Magpul PMAG, a CMMG ZEROED muzzle brake, CMMG ZEROED trigger, ambi charging handle, ambi safety selector, and RipStock. All the core components are installed and ready to use.
The 16.1" carbine length works well for shooters who prioritize maneuverability and portability while still wanting the effective range and accuracy of a modern rifle platform. It's ideal if you're hunting from a vehicle, working in brush, or need a compact gun for home defense or sport shooting. You don't sacrifice the ballistic advantage of a proper barrel length, but you gain handling ease.
SKU: 120923009 • Weight: 7oz
Availability: In Stock
Current Stock: Out of stock
The CMMG Resolute Mk4 5.56mm rifle is a no-nonsense carbine built for hunters, sport shooters, and anyone who needs a versatile, dependable platform without excess bulk. Chambered in 5.56x45mm—one of the most proven and accessible rifle rounds in the world—this 16.1" rifle splits the difference between maneuverability and effective range, making it equally at home in the field, at the range, or as a core addition to any collection. With a direct impingement operating system and a mid-length gas system, the Resolute delivers reliable performance across a wide range of ammunition.
Built on CMMG's Mk4 platform, this rifle accepts standard AR15 accessories, so you're not locked into proprietary parts or limited by compatibility. The coyote tan Cerakote finish is both functional and distinctive. The EML15 M-LOK handguard strikes a practical balance—M-LOK slots at the 3, 6, 9, and 12 o'clock positions give you mounting options for lights, lasers, or grips while keeping weight down compared to full-length rail systems. All the essentials are here: a CMMG ZEROED muzzle brake, ambi charging handle, ambi safety selector, and RipStock carbine buffer tube with sling attachment plate.
This is a rifle that does its job without pretense. The forged 7075-T6 aluminum lower receiver and billet upper receiver provide a solid foundation, while the 4140CM chrome-moly barrel is threaded 1/2 x 28 for future muzzle device changes if you want them. Topped with a ZEROED drop-in trigger and packaged with a 30-round Magpul PMAG, the Resolute Mk4 is ready to go. At 6.4 lbs and 32.5" overall length, it's compact enough to handle but doesn't sacrifice the ballistic advantage of a longer sight radius and barrel.
Whether you're building your first serious rifle or adding a proven work gun to your safe, the Resolute Mk4 5.56mm delivers everything you need in a straightforward, no-drama package.
| Caliber | 5.56x45mm |
| Barrel Length | 16.1" |
| Barrel Twist | 1:7 |
| Barrel Material | 4140CM Chrome-Moly |
| Barrel Contour | MT |
| Overall Length | 32.5" |
| Weight | 6.4 lbs |
| Operating System | Direct Impingement |
| Gas System Length | Mid-length |
| Gas Block | 0.750" Non-Adjustable |
| Upper Receiver | Billet 6061-T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075-T6 Aluminum |
| Platform | Mk4 |
| Handguard | CMMG EML15 M-LOK |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 1/2 x 28 |
| Charging Handle | CMMG ZEROED Ambi |
| Trigger | ZEROED Drop-In |
| Trigger Guard | CMMG ZEROED |
| Safety Selector | CMMG ZEROED 60/90 Degree Ambi |
| Pistol Grip | CMMG ZEROED |
| Stock/Brace | CMMG RipStock |
| Receiver Extension | CMMG 6 Position Fastback w/Ambi Sling Plate |
| Buffer Type | Carbine |
| Finish | Coyote Tan Cerakote |
| Magazine Included | Magpul 30-round PMAG |
The Resolute Mk4 is built on the Mk4 platform and accepts standard AR15 accessories, including grips, stocks, optics mounts, lights, and rail-mounted gear. The EML15 handguard features M-LOK attachment points, so you can add lights, lasers, vertical grips, or other M-LOK accessories. The muzzle device is threaded 1/2 x 28, allowing you to swap or upgrade the brake if needed.
Yes. The 5.56x45mm cartridge is widely used by hunters for varmint and small- to medium-game hunting, and the 16.1" barrel provides enough velocity and accuracy for those purposes. The rifle's compact size makes it easy to handle in the field, and the M-LOK handguard allows you to attach optics, lights, or other gear to suit your hunting setup.
The CMMG Resolute Mk4 comes with a 30-round Magpul PMAG, a CMMG ZEROED muzzle brake, CMMG ZEROED trigger, ambi charging handle, ambi safety selector, and RipStock. All the core components are installed and ready to use.
The 16.1" carbine length works well for shooters who prioritize maneuverability and portability while still wanting the effective range and accuracy of a modern rifle platform. It's ideal if you're hunting from a vehicle, working in brush, or need a compact gun for home defense or sport shooting. You don't sacrifice the ballistic advantage of a proper barrel length, but you gain handling ease.
SKU: 120923009 • Weight: 7oz