The CMMG Mk4 is the latest platform tailored to embrace the scorching 22 Nosler, with four models now being chambered for the cartridge.

  • CMMG has introduced four Mk4 models configured for the 22 Nosler.
  • The four models come with 18-, 22- or 24-inch barrels.
  • Each rifle’s barrel utilizes optimized 1:8 twist rates.
  • CMMG also released complete uppers and barrels in 22 Nosler.

In recent years, Nosler’s ballisticians have appeared to do their darndest to tear the copper jacket off the company’s bullets. The ammo maker’s proprietary cartridges are by far among the hottest available for their respective calibers. And the gun-manufacturing end of the industry has been quick to embrace this blistering ammunition.

CMMG Mk4 V2 Profile

CMMG recently jumped on the Nosler bandwagon, embracing a cartridge the Oregon ammo company cooked up especially for the AR-15 platform. The Missouri gunmaker now offers its CMMG Mk4 rifle chambered for the fast and flat-shooting 22 Nosler, which was just released at the 2017 SHOT Show. For varmint hunters or competitors searching for a way to reach out a bit farther or hit harder, this should prove a solid match between cartridge and rifle.

CMMG hasn’t held back in embracing the Nosler creation, serving up four Mk4 models in the line, all well-tailored for practical applications of the 22 Nosler. On the roster are the Mk4 RCE, Mk4 S, Mk4 P and Mk4 V2.

Depending on the model, nearly all the rifles come with an 18- or 22-inch medium taper barrel, all outfitted with rifle-length gas systems and a muzzle brake or compensator. The exception to this is the Mk4 V2, which has a medium tapered stainless steel fluted barrel and is cut with a target crown.

CMMG Mk4 and coyote

The new line of Mk4s also all boast CMMG’s RKM14 handguard, which free-float the barrel and utilize the KeyMod system at 3, 6 and 9 o’clock positions for the addition of accessories. Additionally, the handguard has a full-length Picatinny rail that runs directly into the upper receiver, giving ample real estate to attach an optic.

Shooters also have the option for upgraded triggers on two of the 22 Nosler models, with the CMMG Mk4 RCE and Mk4 V2 outfitted with Geissele Automatics SSA Two-Stage triggers. The Mk P and S each come with single-stage Mil-Spec-style triggers.

The cartridge itself is proving to live up to its billing as the most powerful .22 caliber on the market. The 22 Nosler can push a 55-grain bullet upward of 3,500 fps out of a 24-inch barrel and shows little to no drop out to 200 yards. Nosler achieved these impressive results by super-sizing the 22 Nosler’s case, a 25-percent increase in case capacity over the .223 Rem. These larger-diameter cases, however, forced Nosler to turn to 6.8 SPC magazines to ensure proper feeding (CMMG includes one 10-round mag with all its rifles).

CMMG Mk4 bipod

CMMG is ahead of the curve when it comes to rifles chambered in 22 Nosler. While there are examples on the market, they have not become ubiquitous. And the company, in its typical fashion, has also turned its eye to those who wish to build or configure an existing AR to shoot 22 Nosler, offering both barrels and complete uppers. Presently, the CMMG Mk4 22 Nosler models run from $1,099.95 to $1,449.95 for a complete rifle. Barrels run from $209.95 to $349.95, and complete uppers from $799.95 to $899.95.

Specifications:

CMMG Mk4 in 22 Nosler

Mk4 S
CMMG Mk4 S
Barrel: 18 in., 1:8 Twist, 22 Nosler, Medium Taper 416SS Barrel
Muzzle: A2 comp., threaded 1/2-28
Handguard: CMMG RKM14 KeyMod handguard
Furniture: A2 pistol grip, M4 butt stock with 6-pos Mil-Spec receiver extension
Receivers: Forged 7075-T6 AL M4 type upper, AR15 type lower
Trigger: Single stage mil-spec style trigger
Weight: 6.5 lbs. (UNLOADED)
Length: 34.5 in. (STOCK COLLAPSED)
MSRP: $1,099.95

Mk4 RCE
CMMG Mk4 RCE
Barrel: 18 in. 1:8 Twist, 22 Nosler, Medium Taper 416SS Barrel
Muzzle: CMMG SV Brake, Threaded 1/2-28
Handguard: CMMG RKM14 KeyMod handguard
Furniture: Magpul MOE Pistol Grip, Magpul CTR stock with 6-pos Mil-Spec receiver extension
Receivers: Forged 7075-T6 AL M4 type upper, AR15-type lower
Trigger: Geissele Automatics SSA Two-Stage
Weight: 6.7 lbs. (UNLOADED)
Length: 35 in. (STOCK COLLAPSED)
MSRP: $1,399.95

Mk4 P
CMMG MK4 p
Barrel: 22 in., 1:8 Twist, 22 Nosler, Medium Taper 416SS Barrel
Muzzle: CMMG SV Brake, Threaded 1/2-28
Handguard: CMMG RKM14 KeyMod handguard
Furniture: Magpul MOE Pistol Grip, Magpul MOE Rifle stock
Receivers: Forged 7075-T6 AL M4 type upper, AR15 type lower
Trigger: Single-stage, Mil-Spec style trigger
Weight: 7.3 lbs. (UNLOADED)
Length: 42 in.
MSRP: $1199.95

Mk4 V2
CMMG-Mk4-V2
Barrel: 24 in., 1:8 Twist, 22 Nosler, Medium Taper Fluted 416SS Barrel
Muzzle: Target Crown
Hand Guard: CMMG RKM14 KeyMod handguard
Furniture: Magpul MOE Pistol Grip, Magpul MOE Rifle stock
Receivers: Forged 7075-T6 AL M4 type upper, AR15 type lower
Trigger: Giessele Automatics SSA 2-Stage
Weight: 7.5 lbs. (UNLOADED)
Length: 42 in.
MSRP: $1,449.95


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