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Centurion Arms

Centurion CMR 7.62 / .308 Rail System - 14

Centurion CMR 7.62 / .308 Rail System - 14
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Our patent-pending 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. Here, other accessories can be directly mounted to it with a dedicated, simple, light-weight, mount. However, it does allow for 1913 rail to be added, if needed, for some less common accessories. 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.


  • DPMS High Rail Pattern
  • Material: 6061 T6
  • Finish: Type III hard coat anodized
  • Integrated QD Attachment sockets - Limited Movement
  • Weight: 15.9 oz with barrel nut
  • Length: 14"
  • Width: 1.73" (body of tube) 1.938" (at QD Sling Swivels)
  • Height: 2.173"
  • Inside Diameter: 1.25"
  • Rails: 1913 spec rail on top

Additional Info

Additional Info

SKU CMR:701114
Manufacturer Centurion Arms
Finish Black
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (1)

Looks great, REALLY poor customer serviceReview by
Well I bought this unit, even though it is ridiculously expensive. I received the unit with great anticipation. I was SEVERELY disappointed. This unit requires a special tools to install the barrel nut. BTW, I had to contact the manufacturer to get the installation instructions, because they don't even include it in the box, nor do they have a link to one on their website.
They have some very explicit instructions on how to torque the nut in 3 separate steps on to the upper. Then when asked the availability of the tolls they wrote to me that I can buy a spanner wrench from McMaster-Carr, which by the way is useless to get ANYTHING installed to a specific torque. So if you are looking to buy a quality product, backed by solid engineering and customer support, look beyond this one!

As a reference, Daniel Defense includes the same type of tool in every one of the handguard they sell. This is the tool that I will be modifying by hand to make the installation of this product meet their own specification, Pathetic at best!
(Posted on 5/20/2015)

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