Knights released a new upper receiver group and rail at SHOT Show this year.  The rail is part of the URX family, and bears the name of the URX 4.  The notable and obviously difference is this rail is setup for the Keymod system.  The easiest way to look at a Keymod rail is that the mounting system in internal, unlike the common 1913 rails which are external as well as heavier.  This upper receiver group is chambered for 300BLK. While we have some "typical" low quality trade show pictures, the below video does a much nicer job of showing off the new offering.  You may also notice KAC has released an entire line of accessories for the Keymod, these will work with any Keymod rail, not just the URX 4.

[youtube]http://www.youtube.com/watch?v=FKU1uqcvACw[/youtube]

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