M3 Tactical flashlight (LED) with integrated mounting on weapons which have RIS rails with a width of 20 mm (+ 5 mm). The flashlight is equipped with super light-emitting diode (up to 125 lumens), so it provides a very intense beam glare. As a power source you use two pieces of CR123 batteries which are not included in the package. You can not use any rechargeable batteries because of their high voltage which can cause damage to the diode. M3 is the lantern on the rear left side of the trigger microswitch or you can also connect an external touch switch over twisted cable, which is part of the whole package.