The KAC URX 4 Forend Kit is a fully modular design that utilizes the revolutionary 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 KAC URX 4 Rail is a fully modular design that utilizes the revolutionary 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 …

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.

The KAC URX 4 Rail is a fully modular design that utilizes the revolutionary M-LOK accessory mounting system. The URX 4 Rail is stronger and more stable than previous URX designs due to its one piece construction.

Lightweight and military-tough, the KAC URX rail for sale is available in a configuration to fit your specific rifle setup with state-of-the-art engineering throughout every inch of its design.

The Knight's Armament Upper Receiver Extending Rail system, or URX, is now in it's 4th generation and being offered in M-LOK. The URX 4 is a continuous top-rail system that utilizes Magpul's M-LOK mounting system.

The KAC URX 4 Rail is a fully modular design that utilizes the revolutionary KeyMod 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 …

The KAC URX 4 Forend Kit is a fully modular design that utilizes the revolutionary M-LOK accessory mounting system. The URX 4 Rail is stronger and more stable than previous URX designs due to its one-piece construction.

Jul 19, 2014 · The URX 4 is Knight’s latest rail system offering, utilizing a one piece design with an Integral Barrel Nut (IBN). The top of the anodized aluminum URX 4 features a STANAG rail, while the other sides accept KeyMod modular accessories.

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.