BUSHNELL BORESIGHTER KIT .17-.45

Description

The Bushnell Professional Boresighter kit is a shop and range tool aimed at hunters, target shooters, and gunsmiths who want to get a rifle or handgun on paper without burning through ammunition in the process. The approach is straightforward: an optical collimator attaches to the muzzle, projecting an internal grid that you align with your scope’s reticle or iron sights by adjusting windage and elevation. Sights centered on that grid will land close to point of aim at 100 yards, giving you a solid starting point before you fire a single round.

The collimator body is CNC-machined from aluminum and finished with a hardcoat anodize, which resists surface wear from the kind of repeated handling a range tool sees. Three expandable steel arbors cover the .22 to .270, 7mm to .35, and .35 to .45 caliber ranges, and a separate fixed insert handles .177. Each expandable arbor stretches to grip the bore snugly, so the collimator sits concentric with the bore axis rather than resting loosely in the muzzle — a meaningful detail because any wobble in the arbor introduces error before you’ve made a single adjustment. The fixed .177 insert uses a set diameter rather than an expanding design, which is appropriate for the consistent bore dimensions of airguns.

Everything ships in a hard-sided vinyl-covered case that keeps the arbors organized and protects the collimator’s objective lens between uses. For anyone who works across multiple calibers or moves the kit between locations, that organization matters: a misplaced or scratched arbor is the kind of small problem that costs time at the range. The kit covers everything from rimfire to large-bore handgun calibers, making it a practical single purchase for a mixed battery.