BSA Optics Boresighter 17-50cal Arbors 177 to 50 cal Scope Alignment

The BSA Optics Boresighter is designed to get you on paper quickly and accurately, with a complete set of arbors spanning calibers from .177 to .50 and a rugged, heavy duty hard case for dependable transport and protection. This versatile boresighting solution comes with .177 Arbor, .22 Arbor, 6mm Arbor, .25 Arbor, 6.5 mm Arbor, .27 Arbor, 7 mm Arbor, 30 Arbor, .32 Arbor, .338 Arbor, .35 Arbor, .375 Arbor, .44 Arbor, .45 Arbor, and .50 Arbor, enabling precise alignment across a broad range of popular calibers used in hunting, sport shooting, and tactical applications. Built by BSA Optics, the device is engineered to simplify sighting-in at the bench or field, reducing wasted shots and downtime while maintaining a professional, reliable fit with your scope or mounting system. Ideal for shooters who demand speed and accuracy, this boresighter integrates seamlessly into routines for zeroing new optics, verifying windage and elevation, or confirming optic alignment after transport. The result is a streamlined workflow that supports consistent first-shot hits and improved overall accuracy, making it a practical addition to any quality scope bases and mounts setup.