CMMG Mk3 3GR Upper Group – .308

$989.99 $889.99

5 in stock

5 in stock

SKU: RS-CMMG38BCCE5 Categories: , ,


The Mk3 3GR was developed for the heavy metal class 3-Gun shooter, but is just as well suited in the field as it is on the range. The Mk3 3GR Upper Group features an 18″ 416 stainless steel, heavy taper profile, 308 WIN barrel. This Upper Group is equipped with CMMG’s SV muzzle brake and RKM15 KeyMod hand guard.

Manufacturer Part Number: 38BCCE5

  • Caliber: 308 WIN
  • Barrel: 18, 1:10 twist, heavy taper, 416SS, Bead blasted finish
  • Muzzle: CMMG SV Brake, threaded 5/8-24
  • Hand Guard: CMMG RKM15
  • Upper Rcvr: Billet 6061-T6 AL LR308 type
  • Gas Port Location: Rifle

Upper Group consists of:

  • Upper Receiver Assembly (Upper Receiver, Ejection Port Cover)
  • Barrel Sub-Assembly
  • Hand Guard and Barrel Nut
  • Charging Handle
  • Bolt Carrier Group

Additional information




Barrel Length


No additional specifications are currently available.

MSR Arms Advisor

The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible. There are currently no articles available for this item. If you would like help selecting the right part for your needs, please email our sales team at:


Sorry, no media content is currently available for this product.


There are no reviews yet.

Be the first to review “CMMG Mk3 3GR Upper Group – .308”

Your email address will not be published. Required fields are marked *

Questions and answers of the customers

There are no questions yet, be the first to ask something for this product.

Take a second and .....
Enhance Your Inbox!
Be the first to get latest updates,
exclusive content and exciting deals straight to your email inbox.
Yes, I want to receive updates
No Thanks!