Pinty Bore Sighter kit Red Laser for .22 to .50 Caliber Rifles Handgun Dot Bore Sight This laser boresighter is made for sighting your rifle and shotgun without having to fire a single shot. Simply choose the caliber adapter and place the laser unit in the muzzle. The sight will emit a straight red laser beam, providing a precise reference for zeroing in on your target. Unlike most in-muzzle boresighters this unit sticks out from the firearm to prevent accidents. It fits 0.22 to 0.50 caliber rifles, handguns, and scopes.