A few weeks ago Centurion Arms dropped their new Midlength Cut Out Rails onto the rail scene, and they have now followed up on it with their carbine version. As you may remember, Centurion Arms C4 rails were chosen as one of our favorite new items from SHOT. The newest rail is the Carbine Length Cutout Rail and is designed for barrels that use a fixed Front Sight Base (FSB) and a carbine length gas system. The carbine length gas system is what is found on the issued M4. This new rail extends past the FSB and allows for additional mounting space on the side and lower rails. This is a benefit to guys who are using lights, as the farther out the light gets, the less shadowing we see off the barrel.
Installation of this two-piece, free-floating rail remains the same as it does with the other Centurion Arms C4 rails and is as straightforward as removing the delta ring to expose the barrel nut then removing or cutting off the hand-guard cap. All Centurion Arms rails are 6061 T6 aluminum, type III hard coat anodized, 1913 spec with grade 8 fasteners. Centurion Arms is owned and operated by an active duty Navy Seal (no we aren't breaking OPSEC), and the rails were designed and machined here in the USA.
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For additional information on the Centurion Arms C4 rails, you can take a look at the previous articles on Gear Scout.
http://blogs.militarytimes.com/gearscout/2010/10/03/centurion-arms-c4-rail/
http://blogs.militarytimes.com/gearscout/2011/01/19/centurion-arms-c4-rail-2/
