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

General Thomas Gage ordered Bostonians to surrender their firearms at Faneuil Hall
General Thomas Gage ordered Bostonians to surrender their firearms at Faneuil Hall

America 250: The Tradition Of The Armed Citizen Lives On

The Declaration of Independence reaffirmed the right to self-determination—and the uniquely American practice of keeping and bearing arms allowed a new nation to thrive.

The Armed Citizen® Jan. 5, 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.

Too Late: The Perils Of Waiting To Buy That One Gun

Gunmakers are often quiet when they discontinue a gun model. We’ve all felt the pain of suddenly discovering a firearm we’d love to own that is no longer available.

Preview: DA Targets Half-Size Silhouette Color-Changing Target

Replacing targets, time and time again, can be costly and time-consuming, which is where this U.S.-made product from DA Targets comes into play.

Return Of The Red Label: Ruger's New Red Label III Shotgun

Ruger's Red Label III marks the third generation of Ruger's classic over-under shotgun, which is finally making a reappearance after it was discontinued more than a decade ago.

Preview: GPS Bags Shotgun Shell Tote

Range visits are often more enjoyable with well-organized equipment, which is where GPS Bags comes into play with its Shotgun Shell Tote.

Interests



Get the best of American Rifleman delivered to your inbox.