Tested and recommended by the National Tactical officers Association, the Sightmark boresight offers a quick and easy way to sight in your .40 Smith & Wesson pistol. The bore sight can be used as a training aid for "quick draw" drills. Includes a carrying case, three AG3 batteries and instructions.
Specifications:

Type	Laser Boresighter
Caliber	40 Smith & Wesson (S&W)
Style	Cartridge
Material	Brass
Quantity	1
Battery	AG3 (3)
Mount