**THESE ITEMS ARE FUNCTIONALLY SOUND, BUT MAY HAVE COSMETIC BLEMS AND/OR MAY BE AN OLDER MODEL**
**PHOTO DOES NOT SHOW ACTUAL PRODUCT/BLEMISHES/ETC**
**NO RETURNS FOR ANYTHING OTHER THAN FUNCTIONAL DEFECTS**
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.
**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
Features
Material: 6061 T6
Finish: type 3 hard coat anodized
Weight: 10.5oz with screws---1.1oz more with standard barrel nut
Length: Top 7.25 in Sides 9.5 in Bottom 8 in
Height: 2.38
Inside diameter: 1.37
Rails: 1913 spec rail
Fasteners: grade 8 bolts with phosphate finish
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
*** We recommend gunsmith installation for all of our parts. We cannot warranty items damaged by improper installation.
