7.62 MLOK Rail (11.5in - 15in)

Usually Ships in 1-2 Business Days
(2 reviews) Write a Review

Our patented CMR rail system is a lightweight, rugged, one piece, free float hand guard that, when installed, gives the upper a continuous 12 o'clock rail. The CMR system clamps to a proprietary barrel nut that can be installed on 7.62/.308 based AR platform systems. It was designed with the top 1913 rail for mounting the most common accessories, yet does away with the need for 1913 rail at the 3, 6, and 9 o'clock positions and using the MLOK mounting system. Additionally, we built in anti-rotation QD sling swivels in 4 positions. The main objective was to have a smaller, lighter weight, more ergonomic, hand guard that maintains or enhances functionality for the end user. As professional end users ourselves, we know the importance of keeping things simple and that was our design intent here... a K.I.S.S. (keep it simple, stupid) system.


***Current CMR MLOK models are DPMS high pattern receivers***

Material: 6061 T6

Finish: Type III hard coat anodized

Integrated QD Attachment sockets - Limited Movement

Weight: 13in-15 oz with barrel nut | 15in-16.3 oz

Barrel nut: 4.6 oz 2.5 in long / 1.53 O.D. / I.D. to fit up to 1.2 in barrel

Length :13in (13") | 15in (15”)

Width: 1.61 in (body of tube) 1.96 in (at QD Sling Swivels)

Height: 2.121 in

Inside Diameter: 1.441 in

Rails: 1913 spec rail on top

Barrel nut: 4130 steel and 2.5in long

Made in USA



-Currently our gas block is the only one that Centurion Arms can guarantee to fit under the CMR. This is due to the CMR's extreme low profile.

- Screws, proprietary barrel nuts, and wrench are included with the purchase of all rail systems. Replacement screws, barrel nuts, and wrenches are available to purchase if necessary.


  • 5
    15" 7.62 CMR

    Posted by Matt on Oct 31st 2019

    Another great rail from Centurion, to go along with my 3 C4 rails. The 15" mlok rail fit perfectly with an 18" barrel. It locks up tight, and provides plenty of space for mounting accessories, or in my case, an mlok bipod mount. No issue fitting an adjustable gas block underneath, and making changes is easy as well.

  • 5
    Great rail

    Posted by Erik Gillespie on Aug 10th 2019

    This rail mount is extremely solid. The rail itself has a great feel. Rail diameter is large enough to fit over most gas blocks, but thin enough to grip comfortably