**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
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The MLOK C4 rail system is based off the patented quad rail version. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12o'clock rail and MLOK slots for the 3,6, and 9 oâclock positions. 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.
Features
Material: 6061 T6
Finish: type 3 hard coat anodized
Weight: 8.9 oz with screws --- 1.1oz more with standard barrel nut
Length: Top 9 1/4in Sides 11 1/2in Bottom 10 5/8in
Height: 2.38
Inside diameter: 1.37
Rails: 1913 spec rail
Fasteners: grade 8 bolts with phosphate finish
MADE IN USA
Specification
Specification
Manufacturer
Centurion Arms
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