Tim checks out Centurion Arms’ brand new, lightweight and narrow diameter CMR 12-inch tubular rail.

Centurion Arms has developed its latest hand guard system for the AR platform for 5.56mm and 7.62mm rifles. Boasting an extremely narrow diameter, it is approximately .120″ narrower in diameter (side to side) than a Troy Industries VTAC rail. The lightweight, custom barrel nut can be installed with a standard adjustable pin spanner wrench. Rather than attach sections of picatinny rail to the hand guard, Centurion Arms will be releasing mounts that will screw directly into the hand guard eliminating the need for an intermediate interface. The mount system is a hybrid design. It borrows the concept of the locking cross bolt system found in the H&K 416 and combines it with a clamp to the barrel nut. The tolerances are held tight and the hand guard is about a slip fit on the barrel nut prior to tightening. The mount mechanism is rock solid. As with all Centurion Arms hand guards, there are integral sling swivel attachment points at the front and rear at 9 and 3 o’clock. The entire rail is cleanly machined, extremely ergonomic, and attractive to boot. They should be hitting the market at any moment so look for it at your favorite dealer.

SOURCE: http://www.centurionarms.com

Edited to add weights:

CMR 12-inch with barrel nut and screws: 10.7 ounces

CMR 14-inch with barrel nut and screws: 11.6 ounces