Leupold Zero Point Illuminated Bore Sighter

Its unique lens aperture system eliminates point of aim errors resulting from parallax due to extreme misalignment. The bore sighter also includes natural back lighting of the target, LED illumination for use in low-light settings, and an inch scale for measuring approximate rifle scope height and target group sizes. Check your zero. Set new ranges. Compatible with any caliber firearm. Energy efficient design yields 25 hours of battery life. Range cards for recording sight-in information are included. Note:We have mounted many scopes using this tool with remarkable results.The easiest way to get on the paper the first time.