Bsa Boresighter Kit W/ Adj Arbor Blk

The BSA Boresighter Kit with Adjustable Arbor in black is a multi-caliber collimator system engineered to eliminate wasted ammunition and range time during sight-in procedures. This boresighter accelerates the process of getting rounds on paper by optically aligning your firearm's barrel to the bore before firing, a critical first step for operators, hunters, and competitive shooters who depend on precision zero.

The kit includes replaceable arbors covering .177 to .50 caliber rifles, plus dedicated shotgun arbors for 12-gauge, 20-gauge, and 28-gauge shotguns—adapting to a wide spectrum of firearms without requiring separate tools or instruments. The adjustable arbor design accommodates bore-to-sight offset variations inherent in different firearm platforms. Heavy-duty hard case storage protects the collimator and arbor set during transport and storage, ensuring optical alignment remains stable across deployments.

This boresighter serves tactical teams, law enforcement firearms instructors, sporting shooters, and precision rifle builders who require repeatable, documented zero procedures. By establishing bore alignment before live fire, operators reduce ammunition consumption during training cycles, minimize cold-bore shot delays, and establish a reliable baseline for ballistic confirmation. The multi-caliber arbor system makes this a single-tool solution for units managing diverse duty weapons or inventory testing.

Optical collimators remain standard-issue in professional armory protocols and precision gunsmithing workflows because they provide a repeatable, ammunition-free method to verify barrel alignment. The BSA system's broad caliber coverage and shotgun compatibility position it as a versatile option for mixed-platform inventories.