Manufactured by Raytheon. The AN/PAS-13E(V)2 is in current use by the United States Armed Forces. The (V)2 version is for use on the M4/M16 series of rifles and the M249 General Purpose Machine Gun. The optics body features a cluster of buttons on top behind the battery pack with buttons for gain/brightness, adjustment up and down of said settings, zoom, and white hot/black hot. The lower right side of the body has a knob for on/off and emergency operation. Included with the optic is a nylon carry bag hard case for the optic in the carry bag, (V) 1,2 & 3 Operators Manual, extra battery cell with batteries installed, a pack of 4 AA Batteries and a lens wipe kit.