The Bushnell Magnetic Boresighter is a collimator tool that gets your rifle or handgun zeroed indoors without burning through ammunition or range time. Whether you're a hunter prepping for the season, a precision rifle shooter dialing in a new optic, or a gunsmith fine-tuning multiple firearms, a magnetic boresighter cuts your sighting-in process down to minutes. Attach it to your muzzle, align your scope or iron sights to the collimator grid, and you'll be shooting very close to point-of-aim at 100 yards before you ever head to the range.

The magnetic design is the key convenience here: it works on all calibers and firearm types, and attaches directly to the muzzle without needing inserts, arbors, or caliber-specific adapters. No fiddling with parts. Just stick it on, look through your glass, and dial until everything lines up. The collimator body is CNC-machined aluminum with hardcoat anodizing—tough enough to survive the occasional bump in your gun room or truck bed and precise enough to give you repeatable alignment every time.

Beyond the tool itself, Bushnell includes a cloth carrying case with a pull chord, so you can keep the boresighter clean and protected between uses. It's the kind of detail that matters if you're balancing multiple builds or helping other shooters get their rifles dialed. For hunters who want to verify their zero before opening season, or any shooter who values ammunition conservation and efficiency, the magnetic boresighter is one of those small-cost purchases that pays for itself the first time you avoid a full box of rounds chasing zero at the range.