The BSA Optics BSA Boresighter Kit W/ Adj Arbor Blk is a multi-caliber optical collimator designed to make initial scope and sight alignment straightforward and consistent. Housed in a heavy-duty hard case, the BS30SGA kit includes a 30mm boresighter body and a full set of replaceable metal arbors sized for common pistol, rifle, and select shotgun calibers from .177 up to .50, plus 12, 20, and 28 gauge adapters.

This kit is well suited for shooters who want to get on paper quickly while conserving ammunition and range time. Whether you are setting up a new optic on a hunting rifle, checking zero on a training carbine, or aligning sights on a handgun, the universal arbor system provides repeatable bore-to-sight alignment across multiple firearms. The robust construction and organized case reflect BSA’s focus on practical, dependable tools for everyday shooters.

• Manufacturer: BSA Optics
• Model: BS30 Boresighter Kit With Adjustable Arbors
• Tool Type: Boresighter / Optical Collimator
• Tool Caliber Coverage: .177 to .50 caliber plus 12, 20, and 28 gauge
• Construction: Metal boresighter with replaceable arbors
• Included Accessories: Heavy-duty hard case and multi-caliber arbor set