***comes with barrel nut***

The Centurion patented 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.

10 inch

Weight: 10.7oz with screws---1.1oz with standard barrel nut

Length: 10in

Width: 2.1in

Height: 2.38

Inside diameter: 1.37

***Please Note***

- Screws are included with the purchase of all rail systems and replacement screws are available to purchase if necessary

- Hex wrenches/keys are not included but installation will require 9/64" and 3/32" SAE Hex Keys

*** We recommend gunsmith installation for all of our parts.***