BSA BS30 Boresighter Kit Pistol/Rifle/Shotgun .177-.50 Cal & 12/20/28 Gauge Hard Case

The BSA BS30 Boresighter Kit is a complete scope alignment tool that lets you pre-zero your optics at the bench without firing a single round. Built around a metal collimating body with a black finish, the kit ships with a generous set of arbors sized for barrels from .177 to .50 caliber, plus dedicated 12, 20, and 28 gauge shotgun studs so you can bore-sight virtually any firearm in your collection.

This BS30SGA configuration includes 15 standard caliber-specific arbors covering popular airgun, rimfire, and centerfire bores, and adds three shotgun gauge studs for use with 12, 20, and 28 gauge shotguns. All of the small arbors stay organized inside the included protective hard case, making this a ready-to-go shop accessory for any gunsmith, hunter, or recreational shooter.

To use, select the arbor that matches your bore, insert it into the muzzle, look through the mounted scope, and adjust the crosshair to align with the reticle projected down the barrel. The BS30 gets you on paper quickly, saving both time and ammunition on the initial zero, and works equally well for pistol, rifle, and shotgun applications.