Description
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.
Fits MIL-Spec uppers. Many billet uppers will not accept the alignment tabs without modification. Any modification will make the rail ineligible for return.
**Please note that some FSBs may need to be modified to fit by filing down the longer sling attachment ears so that they are not touching the handguard
*** We recommend gunsmith installation for all of our parts. We cannot warranty items damaged by improper installation.
Features
Material: 6061 T6
Finish: : type 3 hard coat anodized
Weight: 14.2oz with screws---1.1oz with standard barrel nut
Length: 12.56in (pocket located for carbine length front sight post)
Width: 2.1in
Height: Install 1.978in / end of rail 2.326in
Inside diameter: 1.37
Rails: 1913 spec rail
Fasteners: grade 8 bolts phosphate finished
MADE IN USA
***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
- Download Installation Instructions HERE
Custom Cerakote Disclaimer:
Custom Cerakote is completed per order. Our Cerakote room runs one color at a time so your ship date will be subject to the color rotaion at the time the order is placed. You will receive an email confirmation once the item has actually been packaged to ship.
Cerakote items are not guaranteed to match separate batches or Cerakote completed by outside parties. While we strive to keep our mix uniformed for our own products, we can't say for certain what Walter and Jesse cooked up in their lab out in Albuquerque.
