SiteLite Ultra Mag Laser Professional Boresighter Guaranteed superior accuracy with a lifetime warranty Fits all calibers from .22 to .50 cal. plus 20 & 12 ga. Shotguns Class IIIa Laser Product, less than 5.0mW power output Includes the SRL Scope Leveler to level your crosshairs before boresighting Includes a free Muley Crazy DVD featuring a massive 255" Muley taken by SiteLite President Rich Langner