CMMG Unveils Mk4 V Series

by
posted on July 29, 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. **
http___wwwamericanriflemanorg_videos_gotw-cmmg-mk4-rce.jpg

Whether it’s knocking down a long-range shot or tracking a moving target, speed and accuracy remain a shooter's main goals. To meet these challenges, CMMG has introduced the Mk4 V and Mk4 V2, both chambered in 5.56x45mm.

Both the Mk4 V and Mk4 V2 are equipped with a 24-inch fluted 416 stainless steel barrel designed to extract the utmost performance out of each round. The fluting on the barrel reduces the weight and also allows the barrel to dissipate heat more rapidly, thus cooling down faster.

The rifle also features CMMG’s RKM14 KeyMod hand guard, which offers three primary advantages:

  • Reduced Weight – Material is removed from the hand guard where the KeyMod slots are located making it lighter than traditional quad-rail hand guards.
  • Slimmer Profile – The absence of rails from the sides of the hand guard create a thinner profile that is easier for the average shooter to wrap their hand around and grip.
  • Easy Accessory Attachment – The KeyMod slots are found at the 3, 6 and 9 o’clock positions on the hand guard. Accessories that are KeyMod compatible can be attached directly to the slots, whereas accessories that are not KeyMod compatible can easily be attached by using one of CMMG’s 5-slot accessory rails.

A standard 1913 Picatinny rail runs atop the rifle from the charging handle to the front of the RKM14 hand guard for mounting optics.

The Mk4 V2 comes standard with a Geissele Automatics SSA two-stage trigger pre-installed. The Mk4 V2 comes with standard with a Magpul MOE pistol grip and buttstock and one 30-round Magpul PMAG. The Mk4 V2 is available now and the MSRP is $1,499.95.

The Mk4 V, is a less-expensive option and comes with CMMG’s renowned single-stage mil-spec trigger, an A2 pistol grip and an A1 butt stock. MSRP for the Mk4 V is $1,249.95.

CMMG Mk4 V2 Technical Specifications:Caliber:  5.56x45 mm
Barrel:  24" fluted medium contour, 1:8” twist
Hand Guard:  CMMG RKM14 KeyMod hand guard
Receiver:  Forged 7075-T6 AL
Trigger:  Geissele Automatics SSA two-stage
Furniture:  Magpul MOE Pistol Grip and Buttstock
Weight: 7.5 lbs unloaded
Length: 41.5”
Magazine: 30-round PMAG
MSRP:  $1,499.95

CMMG Mk4 V Technical Specifications:Caliber:  5.56x45 mm
Barrel:  24" fluted medium contour, 1:8” twist
Hand Guard:  CMMG RKM14 KeyMod hand guard
Receiver:  Forged 7075-T6 AL
Trigger:  Single Stage Mil Spec Trigger
Furniture:  A2 Pistol Grip and A1 Buttstock
Weight: 7.5 lbs unloaded
Length: 41.5”
Magazine: 30-round PMAG
MSRP:  $1,249.95

For more information, visit CMMG.com.

Latest

Staccato P4x Review 1
Staccato P4x Review 1

First Impressions of the Staccato P4X

Down in Texas, Staccato launched a new pistol to celebrate America's 250th anniversary: the P4X. One can hardly blame them considering that the company's entire product line is based on the 1911, arguably the most American of handguns.

A Big Third Circuit Ruling on America’s Rifle

In an appeal of a case the NRA filed in 2018, the U.S. Court of Appeals for the Third Circuit struck down New Jersey’s ban on “assault weapons” and “large capacity” ammunition magazines as unconstitutional.

Top Cop: How an Armed American Saved President Trump’s Life

An NRA Benefactor Member and NRA Certified Law Enforcement Patrol Rifle Instructor, Sergeant Aaron Zaliponi likely saved the life of President Trump in Butler, Pa. For these reasons, the NRA has selected him as the 2025 Law Enforcement Officer of the Year.

Review: Rock River Arms A1 Carbine SBR

The Rock River Arms A1 SBR is just plain cool, and there’s little justification needed beyond that for picking up a new gun. It’s a mixture of throwback, retro and nostalgia with a bayonet lug, and you just can’t go wrong there.

The Armed Citizen® July 20, 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.

Plinking Perfect: 5 Must-Haves for Your Next Rimfire Shoot

What better way to celebrate 250 years of freedom than to go out plinking this summer? Here are five great products that will make your next rimfire range trip better than ever before.

Interests



Get the best of American Rifleman delivered to your inbox.