discounted price .22LR red laser boresighter or .17 / .177 red laser boresighter Quickly sight in your rifle with this red laser brass bore sighter. Fits muzzle end of the barrel. Boresighters are ideal for helping you to get on paper before spending expensive rounds zeroing in your scope or iron sights at the range. Batteries 3x AG13/LR44 included but not warrantied. I have other cartridge boresighters listed separately.