The HellFighter Searchlight from SureFire is a high-intensity discharge arc lamp that delivers 3000 lumens and can be mounted on a machine gun or vehicle or used as a handheld searchlight. It comes with an opaque cover that protects against moisture, mud, dust, debris, or accidental escape of light. Power for the Hellfire comes from two 5590 military batteries, but the light can also be powered by a 12 VDC vehicle battery using the included 10' adapter cable. Momentary and constant-on switches are located on the back of the light and on the grip.