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CMMG Mk4 RCE Rifle

CMMG Mk4 RCE Rifle



Fayette, MO --( For the past decade, CMMG has delivered precision-machined AR rifles known for their exceptional function, accuracy and reliability.

The latest rifle to embody these features is the CMMG Mk4 RCE, available in 5.56x45mm NATO or .300 AAC Blackout.

The Mk4 RCE is one of CMMG’s premier 2014 rifle models.  At its core is an M4 upper receiver and an AR15 lower receiver – both forged from 7075-T6 aluminum. The barrel is a matte finished 416 stainless steel 16” barrel with 1:7 rifle twist. The Mk4 RCE weighs just 6.5 pounds unloaded and weighs 7.5 pounds with a fully-loaded 30-round PMAG.  It is 33 inches long with the stock collapsed and is 36 3/8 inches in length with the stock extended.

The RCE includes an RKM14 KeyMod free-floating hand guard with a 1913 Picatinny rail on top.  The KeyMod slots are found at the 3, 6 and 9 o’clock positions and offer shooters a low-profile mounting alternative to the M1913 Picatinny rail.  For accessories that are not yet KeyMod compatible, users can purchase a separate CMMG 5-slot Picatinny adapter rail that can be easily attached to any of the KeyMod slots for optimal placement of the accessories.

The Mk4 RCE is equipped with a CMMG SV muzzle break that helps to reduce recoil and increase muzzle control for quick and manageable follow-up shots.  The muzzle break is built from nitride finished 4140 steel and is able to withstand harsh conditions while providing steady and consistent muzzle rise compensation.

By partnering with other industry leaders, the Mk4 RCE has some of the best components available to complete the rifle. Some of these parts include a Geissele® Automatics SSA® 2-stage trigger, a Magpul CTR™ adjustable stock and Magpul MOE® pistol grip and trigger guard. One Magpul PMAG® with a 30-round capacity is included with the rifle.

CMMG Mk4 RCE Specifications:

  • Caliber:  5.56x45mm NATO / .300 AAC Blackout
  • Barrel:  16″ medium weight tapered profile, 416 stainless steel, 1:7” twist
  • Muzzle:  CMMG SV muzzle brake, Threaded ½-28
  • Hand Guard:  CMMG RKM14 KeyMod hand guard
  • Upper Receiver:  Forged 7075-T6 AL M4
  • Lower Receiver:  Forged 7075-T6 AL AR15
  • Trigger:  Geissele Automatics SSA 2-stage trigger
  • Furniture:  Magpul MOE Pistol Grip & CTR butt stock
  • Weight: 6.5 pounds (unloaded), 7.5 pounds (loaded with 30 round PMAG)
  • Length: 33 inches (stock collapsed), 36 3/8 inches (stock extended)
  • Magazine:  30rd Magpul PMAG
  • MSRP:  $1,399.95

CMMG Lifetime Quality Guarantee
CMMG, Inc. will guarantee its products against defects in material or workmanship.  CMMG, Inc. will repair, replace or substitute part(s) (at CMMG, Inc. discretion) at no charge to the customer if a defect of material or workmanship is found. All service work must be carried out by CMMG, Inc.

About CMMG:
CMMG began in central Missouri in 2002 and quickly developed into a full-time business because of its group of knowledgeable and passionate weapons enthusiasts committed to quality and service. Its reputation was built on attention to detail, cutting edge innovation and the superior craftsmanship that comes from sourcing all their own parts. By offering high quality AR rifles, parts and accessories, CMMG’s commitment to top-quality products and professional service is as deep today as it was when we began.

For more information, please visit:

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