Knight's Armament Company URX 3.1 Rail 13.5" (new old stock AAC)

THESE ARE SURPLUS RAILS THAT KAC DID WITH AAC.  THEY HAVE A SMALL AAC LOGO ON THE FRONT.  RAILS MAY HAVE SCUFFS/STORAGE MARKS AND HANDLING MARKS. COMES WITH BARREL NUT AND RAIL SCREWS

The KAC Upper Receiver Extending (URX) 3.1 rail is a free floating, hybrid modular replacement forend for your AR-15 rifle. The rail features a continuous upper picatinny rail and short sections at its front for accessories. Furthermore, the forend eliminates rail sections in the center for a lighter platform and more comfortable grip. Moreover, the forend features 4 integral QD sling swivel sockets for ambidextrous sling attachment points. The rail is made from high quality aluminum and features a long lasting tough, and durable anodized black finish.

Specifications and Features:
Knights Armament Company 30325
URX 3,1 Forend Assembly
Free Floating Design
13.5" Overall Length
Requires use of Lo-Profile gas block
Requires use of KAC URX Barrel Nut Wrench (PN: 20495, Sold Separately)
Aluminum
Hardcoat Anodized
Overall Length 13.5"
Overall Weight 13.8 ounces
Matte Black

Fits:
This URX 3.1 rail requires a low profile gas block. Disassembly of the rifle's gas system and removal of the factory barrel nut will be necessary. This forend uses a proprietary barrel nut that MUST be installed using a KAC URX Barrel Nut Wrench (PN: 20495, Sold Separately)