The Samson Evolution Keymod Series features standard Keymod slots at the 3, 6, and 9 o'clock positions. In addition, the Evolution rail maintains the ability to accept standard evo accessories at multiple angles around the rail through the original rail's cuts. This allows operators to take advantage of a much larger variety of accessories while still having cross platform capability where it is most needed. The Keymod has the same hand feel and inside diameter as the original Evolution, but it is even lighter. It includes a set of thermal bushings consisting of a left and right and an Allen Wrench in 3/32 size.