CMMG Introduces MkW ANVIL in .458 SOCOM

by
posted on June 15, 2016
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
cmmg_anvil_f.jpg

CMMG has announced the release of its new MkW Anvil, a mid-sized AR rifle platform chambered in .458 SOCOM. The MkW Anvil is engineered to handle calibers with large casing diameters like, as we just mentioned, .458 SOCOM.

The MkW Anvil utilizes CMMG's Powerbolt design, allowing it to use a modified AR10-sized bolt for increased durability. Large-diameter calibers like .458 SOCOM would require material to be milled out of a standard AR15-sized bolt in order to function, making the Powerbolt a necessity. The rifle is also built on an AR10-sized frame, with the upper receiver shortened by three quarters of an inch to minimize weight and increase ergonomics. That said, the magwell on the lower receiver remains designed to accept standard AR15 magazines. About 10 .458 SOCOM cartridges fit single stack in an AR15 magazine, so CMMG married features of AR10 and AR15 designs in order to create the Anvil.

"Our experiences with .458 SOCOM have been extremely positive in terms of accuracy and lethality on large sized game. With the new MkW ANVIL, we're offering our customers a rifle that's been engineered to maximize the performance of this exciting caliber," said Chris Reinkemeyer, CEO of CMMG.

The MkW ANVIL is built with a carbine-length gas system and utilizes an SLR Rifleworks Sentry 7 adjustable gas block. Each rifle comes standard with one modified Lancer L5 magazine that has been optimized for reliability with the cartridge. Additional magazines can be purchased from the CMMG website.

A full-length Picatinny rail runs atop the MkW ANVIL, making it easy to mount your preferred sights or optics. 

Three configurations will be available at the platform's launch.

CMMG MkW ANVIL T
• Caliber: .458 SOCOM
• Barrel: 16.1", 1:14 Twist, Medium Taper, 416SS, SBN
• Muzzle: CMMG SV muzzle brake, Threaded 5/8-32
• Hand Guard: CMMG RKM15 KeyMod
• Upper Receiver: Billet 7075-T6 AL Mid-Size
• Lower Receiver: Billet 7075-T6 AL Mid-Size
• Trigger: Single Stage Mil-Spec Style Trigger
• Furniture: Mil Spec Grip and Butt stock
• Weight: 7.5 lbs (Unloaded)
• Length: 33.5" (Stock Collapsed)
• MSRP: $1,849.95

CMMG MkW ANVIL XBE
• Caliber: .458 SOCOM
• Barrel: 16.1", 1:14 Twist, Medium Taper, 416SS, SBN
• Muzzle: CMMG SV muzzle brake, Threaded 5/8-32
• Hand Guard: CMMG RKM15 KeyMod
• Upper Receiver: Billet 7075-T6 AL Mid-Size
• Lower Receiver: Billet 7075-T6 AL Mid-Size
• Trigger: Single Stage Mil-Spec Style Trigger
• Furniture: Magpul MOE Pistol Grip & CTR Carbine Stock with 6-Position Receiver Extension
• Weight: 7.5 lbs (Unloaded)
• Length: 33.5" (Stock Collapsed)
• MSRP: $1,949.95

CMMG MkW ANVIL XBE2
• Caliber: .458 SOCOM
• Barrel: 16.1", 1:14 Twist, Medium Taper, 416SS, SBN
• Muzzle: CMMG SV muzzle brake, Threaded 5/8-32
• Hand Guard: CMMG RKM15 KeyMod
• Upper Receiver: Billet 7075-T6 AL Mid-Size
• Lower Receiver: Billet 7075-T6 AL Mid-Size
• Trigger: Geissele SSA 2-Stage Trigger
• Furniture: Magpul MOE Pistol Grip & CTR Carbine Stock with 6-Position Receiver Extension
• Weight: 7.5 lbs (Unloaded)
• Length: 33.5" (Stock Collapsed)
• MSRP: $2,149.95

For more information, go to CMMGinc.com.

Latest

Proof PXT Barrel Tech Lede
Proof PXT Barrel Tech Lede

Proof Research Introduces PXT Rifle Barrel Technology

Proof Research has launched Proof Exponential Twist (PXT), an advancement in rifling that promises to improve durability, accuracy and shootability. Further, Proof has backed this new technology with extensive military testing and research. Engineered to meet the demands of modern high-pressure ammunition, PXT is billed as delivering longer barrel life, improved consistency and enhanced performance.  

Ammo Analysis: So You Like 'em Heavy?

Phil Massaro discusses what might make someone opt for a heavy-for-caliber choice when taking on game.

New for 2026: Steiner eDiscovery 10x42 Binoculars with Integrated Camera

Steiner Optics has introduced the eDiscovery 10x42 binoculars, combining clarity and durability with a fully integrated 4K camera.

First Case of CWD Documented on the National Elk Refuge

The Wyoming Game and Fish Department (WGFD) and the U.S. Fish and Wildlife Service (FWS) announced on May 11 that for the first time chronic wasting disease (CWD) has been documented in Wyoming Elk Hunt Area 77, located on FWS-managed National Elk Refuge.

Range Review: Rock Island Armory PK-12 Pak-Out

This 18.5-inch barrel pump action from Rock Island armory folds in half for easier storage and transport. Check out B. Gil Horman's review of the PK-12 Pak-Out here.

New for 2026: Alps OutdoorZ DU Legacy Waterfowl Bag

For those seeking a classy field bag, the Alps OutdoorZ Ducks Unlimited Legacy Waterfowler’s Bag should be on their radar.

Interests



Get the best of American Hunter delivered to your inbox.