The V Tactical LED Flashlight comes as a full kit with Remote pressure tailcap Switch pad, rail Mount, Battery and yellow Filter (optional). Right out of the box, this includes everything you need for either a basic flashlight, or turn it into a weaponlight within a couple of minutes. Mounts to any standard rail (RIS) with remote pressure switch. Perfect for airsoft rifles and shotguns. Includes3 AAA batteries. Light puts out 180 Lumens and also has a strobe function. Will fit on ALL airsoft guns with a rail system.