BSA BS30SGA Bore Sighter Kit with Adjustable Arbors

The BSA Optics BS30SGA Bore Sighter Kit includes adjustable arbors covering .177 to .50 caliber along with 12, 20, and 28 gauge applications. That range gives one kit the flexibility to work with many rifle, handgun, and shotgun bore sizes.

The arbor-based system is intended for initial optic alignment before final live-fire zeroing, making it useful when mounting or changing sights on multiple firearms. The broad size coverage reduces the need to keep a separate bore-sighting kit for every common caliber or gauge. Browse more optics and rangefinders.

• Broad arbor coverage supports many common centerfire, rimfire, and shotgun bore sizes
• One kit can serve several firearms instead of one dedicated bore size
• Bore-sighting process helps establish an initial optic reference before final zeroing
• Useful for benches where optics are installed or swapped on multiple firearms