CMMG Rifles in 9mm, six.5mm Grendel, .458 SOCOM


CMMG Resolute 9mm Federal Ammo

CMMG has extended been an innovator, and the present lineup of AR-pattern rifles keeps with this tradition. Each and every a single of the 3 rifles listed has numerous overall performance characteristics, setting them apart from the additional mainstream competitors.

Most CMMG guns are readily available in rifle and pistol configurations—and in 100, 200 and 300 series trim. The examples I have are all 300 series, which is the most upgraded version.

Resolute .458 SOCOM ammunition Hilux-1 4 Scope
The Resolute .458 SOCOM with Hi-Lux Scope

Actions and Accuracy

The Resolute 9mm rifle utilizes the exact same radially delayed blowback action that permits the use of .45 ACP and 10mm with a lightweight bolt attached to a separate carrier.

The bolt head stays proficiently friction-locked against the barrel extension recesses, slipping out of engagement only right after the gas stress drops. This system permits a extremely light, clean method with a actually no cost-floated barrel.

Not surprisingly, this strategy yields exceptional accuracy about 2MOA with superior ammunition, like Federal Syntech Match.

It also cuts down on the ejection port pop common of plain blowback rifles, all without the need of possessing to employ a heavy breechblock with correspondingly stout recoil spring.

The mechanical accuracy translates reliably into sensible accuracy, thanks to the Geissele Automatics SSA two-Stage trigger. Delayed blowback action and a hugely productive muzzle brake preserve felt recoil low even with the unpadded stock.

CMMG Guard 9mm Bolt Carrier
CMMG Guard 9mm Bolt Carrier

Stocks and Buttplates

The RipStock prevalent to all 3 rifles deserves a specific note. It is an all-aluminum design and style with an integrated buffer tube and a slightly heavier-than-usual buffer. Its name stems from the design and style: any pull backward extends it to complete preset length.

No level or release is involved in the extension, only in the collapse back to the storage configuration. Length preset is achieved with a set screw underneath the buffer tube. Collapsed, this stock is extremely compact.

Extended, it is very robust, although the buffer tube itself is the limiting issue with the AR design and style. The downside is that it is virtually a two-position (open/closed) stock, without the need of the choice to have a shorter length of pull for action and longer for deliberate target stance.

In 9mm, the textured metal buttplate is not a issue, but it requirements a rubber recoil pad in heavier calibers like .458 SOCOM. A slip-on Hi-Viz rubber recoil absorber operates as a cease-gap. CMMG could have a goal-created buttpad out in the future.

The buttplate currently has screw holes for it. Aluminum also transmits warmth or cold readily to the shooter’s face, so a stick-on Neoprene pad is suggested.

cMMG Ristop Stock
Close-up view of the rip stock. Note the screw holes in the buttplate.

Other Design and style Options

Security selector lever and charging deal with are each ambidextrous. Totally free-floated forend extends practically to the muzzle, permitting forward hand-hold for speedy fire or steady bipod position for prone.

The rifles come with two magazines every single, but no iron sights, a affordable omission in the age of practically universal optic use. The 9mm comes with two 30-rounders. I unboxed the MagPump mechanical loader for the occasion and was glad of that selection.

CMMG’s low recoil and higher accuracy make shooting it as addictive as plinking with .22s, only with significantly additional “oomph” behind every single shot. I had no failures with any ammunition attempted, from 115-grain ball to 147-grain subsonics and every little thing in-in between.

The .458 SOCOM ships with metal “30-rounders” modified especially to hold and feed 10 shots of .458 in a single stack.

.458 SOCOM SBR Ammunition Lancer Mag
.458 SOCOM magazine and ammunition

Comparisons to Other ARs

Each six.five Grendel and .458 SOCOM had been created to match regular AR-15 receivers, but the margin of security about the boltface was a bit thin.

CMMG beefed up the receivers to be someplace in between AR-15 and AR-10 dimensions, resulting in a stronger, safer and milder recoiling platform.

Triggers interchange with AR-15 bolt and carrier do not. Though CMMG AR-15s weigh in about six.two-six.five lbs., the guns mounted on hybrid receivers are eight.two-eight.five lbs—heavier, but a far cry from the beefier AR-10.

In the case of the six.five Grendel rifle, significantly of the additional weight comes from the target-grade barrel.

cMMG Resolute 6.5 Grendel Ammo
The CMMG Resolute six.5mm Grendel

Test Conclusions

Among the mildly recoiling cartridge with a reasonably higher BC bullet, the stiff heavy barrel and a superior trigger, this weapon hovers about 1MOA with match ammunition when remaining field-transportable.

The .458 version is not very as correct, but it tends to make up in the sheer brute force of what is basically rimless .45-70. At 60 yards, the typical distance of U.S. police sniper engagement, it hits on a steel overlap.

Its recoil is noticeable, but not painful, becoming spread out more than the extended gas autoloading cycle. The lightest recoil was, as anticipated, with 140-grain ARX bullets.

These frangibles had been also easiest on the steel targets, when 405 jacketed flat-point cratered steel and pushed the shooter additional noticeably. The exact same bullet also cracked the 2×4″ wood supporting the steel with a single effect.

The rifle was fed a wide assortment of .458 cartridges, like heavies with 500-grain flat-point bullets. These would perform just about every bit as nicely as 12-gauge for bear defense, with the advantage of more quickly stick to-up shots.

Apart from these 3 calibers, Resolute rifles are readily available in eight other people from .22 LR to .308 Winchester, quite significantly for just about every taste and price range.

CMMG Resolute 9mm Leupold
CMMG Resolute 9mm Leupold

Which CMMG rifle would you decide on? Let us know in the comments under.


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