The BSA Boresighter Kit with Adjustable Arbor (brand part no. BS30SGA) from BSA Optics expands on the standard collimator boresighter by adding dedicated shotgun capability. Along with arbors covering pistol and rifle bores from .177 up to .50 caliber, this version includes an adjustable arbor and a shotgun adapter that fits 12, 20, and 28 gauge barrels (it will not fit .410 gauge). That makes it a genuine multi-platform tool for a household running rifles, pistols, and shotguns, letting a shooter get any of them on paper without wasting a single shell or cartridge. Everything stores together in a heavy-duty hard case.

Key Specifications

• Adds a dedicated shotgun adapter fitting 12, 20, and 28 gauge barrels (not compatible with .410 gauge).
• Includes an adjustable arbor alongside the standard rifle and pistol arbor set for broader bore coverage.
• Covers rifle and pistol calibers from .177 up to .50 caliber in addition to the shotgun gauges.
• Overall kit length measures 11.75″ for compact case storage.
• Housed in a heavy-duty hard case that keeps every arbor and adapter organized.

Frequently Asked Questions

Will this fit a .410 shotgun? No, the shotgun adapter is built for 12, 20, and 28 gauge barrels only.

Can I still use it on rifles and pistols? Yes, it retains the full .177 to .50 caliber arbor range in addition to the shotgun adapter.

What’s included for storage? Every arbor and the shotgun adapter pack into the included heavy-duty hard case.

Buy the BSA Boresighter Kit with Adjustable Arbor and Shotgun Adapter

For a household with rifles, pistols, and shotguns to zero, the BSA Optics kit is one of the few scope accessories that covers all three. Order it from our Lubbock, Texas gun shop for fast, insured shipping right to your door.