The fit on Monty' s parts are bar none. The C4 I picked up for it wasn' t brand new - I bought it used from a member on M4C and even used, it was still 100% GTG. I have my C4 cutout mounted on a SOLGW FSP upper. I' m a fan of quad rails, and Centurion makes the best 2 piece quad rail.

5 Typical Centurion Quality - Out-freaking-standing.

Well thought out design and robust, I would have zero apprehensions taking this rail into an active cluster is all the rage these days, but this rail shows that the 1913 spec rail has what it takes to stay in the game. The machining is some of the nicest I have seen in the industry. I enjoy getting my hands on it whenever I can. Much like a Dominican girl, she was someone else' s before mine, but is solid and has those sexy lines that go on for days. But that had little impact on how impressed I was with this rail. I honestly ended up picking one up used instead of new. I had this rail on my short list for a long time, always passing it over for other parts (other than rails) I could get for the same money. I' ve been building/assembling ever since. Replacement screws are available to purchase if necessary.Īs someone, much like those likely to read this review, I was bitten long ago by the AR Bug. Screws are included with the purchase of all rail systems. Length: Top 7.25 in Sides 9.5 in Bottom 8 inįasteners: grade 8 bolts with phosphate finish

Weight: 10.5oz with screws-1.1oz more with standard barrel nut **Please Note: Current version of the rail has some slight cosmetic differences from stock photosĮngraving is now machine engraved and black anodized.no white markings. **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

This design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices. 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. 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.

C308 quad rail handguard