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C4 M-LOK Rail (12in Carbine FSP)
C4 M-LOK Rail (12in Carbine FSP)

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Our Price: $350.00

Price with Selected Options: $350.00

Stock Status:In Stock
Availability:: Usually Ships in 1 to 2 Business Days
Product Code: 081912P

Barrel Nut:

Custom Cerakote Options:

Centurion Arms LLC is happy to announce the C4 MLOK® rail.

C4 MLOK 12in FSP (For Carbine Gas FSB's)
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 o’clock 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.

• Material: 6061 T6
• Finish: type 3 hard coat anodized
• Weight: 9.8 oz with screws --- 1.1oz more with standard barrel nut
• Length: 12.565in
• Height: 2.38
• Inside diameter: 1.37
• Rails: 1913 spec rail
• Fasteners: grade 8 bolts with phosphate finish

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Best Centurion Arms Rail yet! March 8, 2020
Reviewer: FS from Texas  
I installed a C4 MLOK FSB rail this weekend on an old Colt 6920 that had been relegated to the back of my safe.   The lightweight nature of this rail, impeccable build quality, and flexibility afforded by the MLOK slots and extended FSB rail completely transformed my old carbine.  I could not be more pleased.   And as always, Centurion Arms customer service was second to none.  This is the best Centurion Arms rail yet.