Centurion Arms

Centurion Arms: C4 Rail System

Centurion Arms: C4 Rail System

Centurion Arms: C4 Rail System

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Made In USA

Centurion Arms' C4 Rail System is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems.

Made of 6061 T6 aluminum with a Type 3 hard coat anodized finish, Centurion Arms' patent pending C4 rail system is a lightweight, rugged, 2 piece free float rail that, when installed, gives the uppers of these weapon systems a continuous 12 o’clock rail. The design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices.


  • Material: 6061 T6 aluminum
  • Finish: Type 3 hard coat anodized
  • Length: Choose 7”, 9”, or 12” length rails
  • Weight: (add 1.1 oz. with a standard barrel nut)
    • 7” Rail: 8.5 oz. with screws
    • 9” Rail: 10.7 oz. with screws
    • 12” Rail: 14.2 oz. with screws
  • Width: 2.1”
  • Height: 2.38”
  • Inside Diameter: 1.37”
  • Rails: 1913 spec rail with proper T-marks
  • Fasteners: Grade 8 bolts phosphate finished

Special discounts may apply for high volume sales. Contact our Bids & Quotes department for more information.

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