Centurion C4 Rail, Carbine Length Cutout


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.

Out of stock

SKU: PL_3845299294 Category:


Note: Current version of the rail has some slight cosmetic differences from stock photos
Engraving is now machine engraved and black anodized….no white markings.




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


***Please Note***

– Barrel nut not included.
– Screws are included with the purchase of all rail systems. Replacement screws are available to purchase if necessary.


Centurion Arms

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