Hoppes BRL1 Bore Light Standard Orange AAA(not included)
A useful tool for clear inspection under any conditions. Illuminates the bore fully, so nicks, scratches, pits and fouling can be easily seen. Good for safety checks and for lighting hard-to-get-at areas. Locking feature can lock light on for longer inspections. A good tool to take along if you're buying a used firearm. It uses two AAA batteries (Not included).