Meet Centurion Arms CMR rail system. 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 5.56/.223 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.
Due to it’s extremely low profile, not all gas blocks will fit inside the CMR profile. If you are running a .750, M4 barrel contour, a micro block may be required. Centurion Arms gas block is also highly recommended to ensure no fitment issues.
Screws, proprietary barrel nuts, and wrench are included with the purchase of all rail systems