Daniel goes over this new baby that has been delivered to Airsoft GI by G&P... "We recently received the brand new Officially Licensed Knights Armament Co. URX 3.1 M4 by G&P, so we decided to take it for a test spin. The rail featured on this gun is one of the shortest versions of the KAC URX rail that we have all grown to love, and has been combined in a high performance, reliable platform, perfect for those looking for a high speed, low drag rifle. We added on some accessories to give you an idea of what you can do to this gun, but it is worth noting that ALL of the golf ball textured rail panels ARE included! Be sure to check out the Officially Licensed Knights Armament Co. URX 3.1 M4 by G&P!"