The KAC URX 4 Rail is a fully modular design that utilizes the M-LOK accessory mounting system. The URX 4 Rail is stronger and more stable than previous URX designs due to its one piece construction. It is also lighter due to its Integral Barrel Nut (IBN) system of attachment. The IBN system allows the rail itself to act as the barrel nut when torqued onto the rifle, completely eliminating the need for a separate steel barrel nut.

Each URX 4 Rail comes complete with an installation wrench, shim kit and instructions. 

UPC
MFG Knight's Armament Co
MODEL Knight's Armament URX 4 M-LOK Forend 10.75"
TITLE Knight's Armament URX 4 M-LOK Forend 10.75"

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