Gun of the Week: CMMG Mk4 RCE

by
posted on June 23, 2014
** 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 introduced the Mk 4 RCE this year as one of the company’s premier new rifles. It features a 16 inch 416 stainless steel, medium-taper-profile barrel and is available in 5.56 NATO and .300 AAC Blackout. The rifle comes equipped with the company’s proprietary SV muzzle brake and RKM14 KeyMod handguard, which allows for all kinds of customization options. The Mk 4 RCE also comes with a Geissele SSA 2-Stage trigger, Magpul’s MOE pistol grip, MOE trigger guard and CTR buttstock as standard features.

What stands out on the RCE, of course, is the new KeyMod fore-end. This relatively new modular system allows plenty of customization without the need for full rails. Accessories can be added precisely where the shooter can best use them, with minimal tools needed. KeyMod-friendly items thread directly into the system, while 1913-style Picatinny rails can be attached for everything else. It’s a tidy, useful system that really opens up how lights, lasers, foregrips and other attachments can be added to an AR-15 style rifle.

Technical Specifications:

Caliber: 5.56mm/300 BLK
Barrel: 16.1" medium weight taper profile
Muzzle: CMMG SV brake, threaded 1/2-28
Hand Guard: CMMG RKM14 KeyMod hand guard
Furniture: Magpul MOE pistol grip, MOE carbine stock
Receiver: Forged 7075-T6 AL M4 type upper, AR15 type lower
Trigger: Geissele Automatics SSA
Weight: 6.7 lbs. (unloaded)
Length: 34” (Stock Collapsed)
MSRP: $1,399.95

Latest

Henry SPD Hush
Henry SPD Hush

Review: Henry SPD Hush Rifle

The SPD Hush, Henry’s new take on the lever-action rifle, is fit for a wide array of tasks and is an ideal host for a suppressor.

New for 2026: Bergara Platinum Stalker and Cima Pro Rifles

Bergara has two new lightweight rifles to lighten the load in the field.

The Armed Citizen® Feb. 2, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Taurus Celebrates 20 Years of the Judge

A custom edition celebrates two decades of Taurus' Judge revolver.

Preview: DefGrip USA Performance Firearm Grips

Holding a firearm consistently and correctly results in more hits than misses on target, and one of the easiest-to-install grip-enhancement products comes from DefGrip USA.

Review: GForce Arms GF9 Rapture

In a market filled with Glock 19 clones, the GForce Arms GF9 Rapture decided to be a Glock 26 clone instead.

Interests



Get the best of American Rifleman delivered to your inbox.