This combined flashlight/laser unit is compact in size and attaches to any 20mm rail with its quick release tabs. This is a relatively heavy unit coming in at 122g with no batteries installed. The head of the unit is full metal whilst the body is tough ABS plastic. The flashlight is comprised of six high-output LEDs, arranged in a circular patter around the laser unit which is located in the centre. You can cycles between either laser or flashlight mode, or opt to have both on at the same time. Powered by x3 AAA batteries (not included). The laser output is adjustable on horizontal and vertical axis via the included allen key and two allen screws located on the head of the flashlight unit. Perfect for any rifle/submachinegun or large-framed pistol (like 1911, M9A1 etc, Glock 17 etc). 96x41x42mm dimensions. This is a Class 2 laser device.