Knight's Armament Co.

Knights armament 10" urx-4 keymod rail system

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Knights Armament URX 4 10" KeyMod Rail System w/ Installation Kit (30740)

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SKU: KNAC30740

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Knight’s Armament is one of the top names in the industry when it comes to AR-15’s and AR-15 accessories.  Most of their products are developed for military contracts.  However, some of their more successful products are marketed to the civilian sector.


The KAC URX-4 rail system is an example of Knight’s Armament’s commitment to at the top of the industry.  When the demands of the market have shifted, KAC develops a new product to fill that new need.  The URX-4 is KAC’s first plunge into the KeyMod realm and they have developed one of, if not the best KeyMod system on the market today.  The URX-4 is KAC’s most stable hand guard system to day, due, in part, to it’s one-piece construction.


One of the most unique aspects of the KAC URX-4 is the manner in which it attaches to upper receiver.  The URX-4 has an integrated barrel nut, which is machined directly into the hand guard.  This differs from the norm, as most AR-15 hand guards have two separate pieces, a barrel nut and a hand guard that clamps on to that barrel nut.  KAC calls this single piece unit, their Integrated Barrel Nut (IBN) attachment system.  This has the benefit of creating a lightweight and extremely rigid platform.


This KeyMod Hand Guard is 10.0” in length and has a weight of 10.08 ounces


This kit includes the shims and wrench needed for installation


Additional Information

Part # 30740
Manufacturer Knights Armament Company


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