Knights Armament URX 4 Handguard with Integral Barrel Nut SR-15 Aluminum Black 10.75 M-Lok

Knights Armament

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The KAC URX 4 Forend Kit is a fully modular design. 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. Accessories may be mounted anywhere along the URX 4’s length, making it one of the most user configurable designs on the market. Each URX 4 Rail comes complete with an installation wrench, shim kit and instructions.