Centurion Arms C4 Rail System - 9.0

The C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. This design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices.

Specifications:

• Weight: 10.6oz with screws
• Length: 9.25" in
• Width: 2.1in
• Height: 2.38
• Inside diameter: Install 1.977in / End rail 2.330in
• Material: 6061 T6
• Finish: Type 3 Hard Coat Anodized
• Rails: 1913 Spec Rail
• Fasteners: Grade 8 Bolts Phosphate Finished

*Barrel Nut Sold Separately

*Fits MIL-Spec uppers.  Many billet uppers will not accept the alignment tabs without modification.  Any modification will make the rail ineligible for return.