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

Match Ready M1 Garand 1
Match Ready M1 Garand 1

Making a Match-Ready M1 Garand

For decades, fans of the M1 Garand have gone to Camp Perry to shoot the John C. Garand match, a test of their shooting skills and rifles. Here, one M1 Garand enthusiast prepares his rifle and ammo for the shoot.

Will the USPS Allow Handguns to Be Mailed?

The U.S. Postal Service (USPS) on April 2, 2026, published a proposed rule that would permit the mailing of lawful handguns through the U.S. mail for the first time in nearly a century.

The Trijicon AccuPoint 1-8x24 mm: A Flexible Optic for Dangerous Game Hunting

Trijicon is probably best known for its military and law-enforcement optics, but the company is also serious about its commercial line of riflescopes designed for hunting.

U.S. Army Bases Will No Longer Be Gun-Free Zones

U.S. Secretary of War Pete Hegseth announced this week that U.S. Army bases will no longer be gun-free zones.

Gun of the Week: CZ Shadow 2 Carry

One of the latest concealed-carry handguns to hit the consumer market is the CZ's Shadow 2 Carry. Watch our "Gun of the Week" episode to see the details of this carry-oriented design.

The Armed Citizen® April 3, 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.

Interests



Get the best of American Rifleman delivered to your inbox.