CMMG Resolute Mk4 Rifle .22 ARC 16.1″ 10rd
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Expert review
About this product
The CMMG Resolute Mk4 Rifle .22 ARC 16.1″ 10rd is a purpose-built, carbine-length modern sporting rifle designed to deliver the ballistic advantages of the .22 ARC cartridge from a reliable AR-style platform. It combines CMMG's proprietary manufacturing and zeroed-in factory components to create a turnkey system that minimizes the immediate upgrades many shooters find necessary with other factory-built ARs. By starting with a solid, tested foundation, this rifle addresses the shooter looking for intermediate-range precision without the typical custom-building puzzle.
What is the CMMG Resolute Mk4 used for?
The CMMG Resolute Mk4 is engineered for intermediate-range precision shooting and ethical predator/varmint hunting out to approximately 500 yards. Its .22 ARC chambering provides a flat trajectory and high retained energy with lighter recoil than comparable intermediate cartridges like 6.5 Grendel, making it an excellent choice for extended training sessions or hunting where shot placement is paramount. The 1:7 twist rate is optimized to stabilize the heaviest, most ballistically efficient .22-caliber projectiles available for the cartridge.
How does the CMMG Resolute Mk4 compare to the Stevens 334?
The CMMG Resolute Mk4 is a superior choice for fast, follow-up shots on multiple targets or in dynamic shooting scenarios compared to a bolt-action rifle like the Stevens 334 in .308 Win. While the Stevens 334 offers inherent bolt-action accuracy at a lower price point, the Resolute Mk4's semi-automatic operation, adjustable gas system, and AR-platform ergonomics provide a significant advantage in rate of fire and adaptability. The .22 ARC cartridge also offers considerably less felt recoil than .308 Winchester, reducing shooter fatigue over a 100-round session.
What does it weigh and what are the dimensions?
This rifle ships with a listed weight of 6.44 pounds (2.92 kg) and an overall length of 32.5 inches (82.55 cm). The 16.1-inch 4140 chrome-moly barrel contributes to this balance, keeping the rifle maneuverable without sacrificing the barrel length needed for the .22 ARC cartridge to reach its intended velocities. For comparison, an AR-platform rifle in 5.56 NATO with a similar 16-inch barrel typically weighs between 6 and 6.5 pounds, putting the Resolute Mk4 squarely in the expected range for a duty-style carbine.
Who is this NOT for?
This rifle is not for the budget-conscious first-time buyer or someone seeking a classic hunting rifle aesthetic. At $1554.99, it represents a significant investment over more common entry-level AR-15s or traditional bolt-actions like the Stevens series. Furthermore, the .22 ARC is a relatively new, proprietary cartridge with less readily available off-the-shelf ammunition compared to staples like 5.56 NATO or .223 Remington, which may be a logistical hurdle for some shooters.
What's in the box?
The rifle ships with one CMMG 10-round .22 ARC magazine, the RipStock collapsible stock, and the CMMG ZEROED muzzle brake installed on the 1/2-28″ threaded muzzle. CMMG's ZEROED program means the ambidextrous safety selector, magazine release, and bolt catch are factory-installed and tuned, which saves an average of 45 minutes of gunsmithing time typically spent fitting and testing aftermarket controls. You will not find a cleaning kit, optic, or sling included; this is a ready-to-configure rifle, not a complete kit.
Is the CMMG Resolute Mk4 worth it at $1554.99?
Yes, for the shooter who understands and needs the specific performance envelope of the .22 ARC in a refined, semi-automatic platform. You are paying for CMMG's billet upper and forged lower construction, their in-house tuned gas system, and the convenience of pre-installed, quality controls that work out of the box. If your use case is general plinking or home defense, a standard 5.56 AR or a more affordable option like a Stevens 334 in .243 Win would be a better value proposition.
Specs at a glance
Pros & cons
What works
- Factory-zeroed controls (safety, mag release) save ~45 mins of fitting and tuning time out of the box
- 1:7 twist 4140 CM barrel stabilizes heavy .22-cal projectiles up to 90 grains for long-range stability
- Weighs 6.44 lbs — balanced for a 16.1" barreled AR-platform rifle with no front-end heaviness
Trade-offs
- .22 ARC ammunition is proprietary and less common/affordable than 5.56 NATO, costing ~25% more per round
- Includes only one 10-round magazine; additional CMMG mags retail for approximately $38 each
- No iron sights or optic included; requires a minimum $150-$500 additional investment to become range-ready
Key attributes
| upc | 810148627072 |
| manufacturer | CMMG |
| manufacturer part number | 28A670CMB |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 16.10" |
| caliber/gauge | .22 ARC |
| capacity | 10 + 1 |
| color | MULTI-COLOR |
| length | 39.6000 |
| safety | Ambidextrous Lever |
| shipping weight | 10.5 |
| sights | No |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is the barrel threaded for a suppressor?
- Yes. The muzzle is threaded 1/2-28", which is the standard thread pitch for .22 caliber direct-thread suppressors. The included CMMG ZEROED muzzle brake can be removed in under 60 seconds with basic tools to attach a compatible sound suppressor, provided you have the required NFA tax stamp.
- Does it use standard AR-15 magazines?
- No. The .22 ARC cartridge requires a proprietary magazine due to its different case dimensions compared to 5.56 NATO/.223 Remington. The rifle ships with one CMMG-manufactured 10-round magazine. Aftermarket magazine options from other manufacturers are limited as of this writing.
- Is the handguard compatible with M-LOK accessories?
- Yes. The CMMG EML15 handguard features a full M-LOK attachment system at the 3, 6, and 9 o'clock positions, allowing direct mounting of lights, lasers, grips, and bipods from brands like Magpul, Streamlight, and SureFire without the need for bulky rail sections.
- How long does Ironclad Armory take to ship this item?
- Ironclad Armory typically processes and ships in-stock firearms within 2-3 business days after receiving a cleared Form 3 (for dealer transfers) and all required documentation. The firearm will then ship via a contracted, licensed carrier like UPS or FedEx to your selected Federal Firearms License (FFL) holder.