This bore sighter is a precision instrument constructed of the finest materials and assembled by highly skilled craftsmen for a lifetime of trouble-free use.This bore sighter is a precision instrument constructed of the finest materials and assembled by highly skilled craftsmen for a lifetime of trouble-free use. This laser bore sighter is designed to quickly get your rifle, handgun, or shotgun on the paper and will save you time and money. Final sighting-in should be done by shooting the firearm and fine tuning the adjustments.Its bright, battery powered laser makes rapid, ultra-precise work of bore sighting.Created to meet the demands of the serious shooter and save you time, money, and your shoulderIncludes arbors for .22 through .50 caliber firearms.