The BS30 Multi Caliber Collimator (Boresighter) stands as a testament to precision engineering, tailored for both pistols and rifles. This indispensable tool ensures your firearm is aligned with accuracy before you even set foot on the range. Designed to save time and ammunition, it allows shooters of all levels to get "on paper" swiftly. Housed in a robust hard case, this boresighter promises durability and convenience. The package includes replaceable arbors compatible with barrels from .177 up to .50 caliber, accommodating an impressive array of firearms. Additionally, its versatility extends beyond traditional calibers; it features an adapter suitable for 12-gauge, 20-gauge, and 28-gauge shotguns—though notably not designed for the .410 gauge. Whether you're preparing your rifle or tuning your shotgun's sights, the BS30 delivers consistent performance across multiple platforms. Its comprehensive design makes it an essential component of any shooter's toolkit, simplifying bore sighting while ensuring each round counts when it's time to fire live ammunition.