Site-Lite Sl-100 Mag Laser Boresighting System

The Site-Lite SL-100 Mag laser boresighting system takes the guesswork out of zeroing rifles, handguns, and shotguns before you hit the range or field. Instead of burning through ammo to dial in your scope, this laser boresighter uses a magnetic bore adapter and precision laser to get your sight picture on target in minutes. It's a one-time investment that pays for itself in ammunition savings alone.

The system works across an impressive range of firearms: .22 to .50 caliber handguns and rifles, 12-gauge and 20-gauge shotguns, and muzzleloaders. No need to buy caliber-specific adapters or worry about damaging your barrel—the magnetic mounting system uses o-rings to fit securely in your muzzle without any metal-to-rifling contact. The aircraft-grade anodized aluminum construction is built to last, and the super-strength magnets in the center cone hold the boresighter rock-solid for repeatable accuracy every time.

Using it is straightforward: set up a target 25 feet downrange, center the laser dot on it, then align your scope crosshairs with the dotted reference lines on the target. You'll be boresighted for 100 yards. Whether you're preparing a hunting rifle for elk season, zeroing a defensive handgun, or getting a shotgun ready for clay shooting, this system eliminates the trial-and-error that eats up time and ammo.

Key Features

• Magnetic mounting system holds securely without metal-to-rifling contact
• Universal compatibility—works on .22 to .50 caliber handguns and rifles, 12-gauge and 20-gauge shotguns, and muzzleloaders
• No optional adapters required; everything is included
• Aircraft-grade anodized aluminum construction for durability
• Laser-based boresighting—25-foot setup for 100-yard zero
• Super-strength magnets ensure repeatable positioning

Specifications

Frequently Asked Questions

What calibers and firearm types does the SL-100 work with?

The SL-100 is designed for universal compatibility across .22 to .50 caliber handguns and rifles, 12-gauge and 20-gauge shotguns, and muzzleloaders. A single system covers all these platforms—no caliber-specific adapters needed.

How does the magnetic mounting system work, and will it damage my barrel?

The system uses super-strength magnets housed in a center cone combined with o-rings to secure the boresighter in your muzzle. The design ensures no metal makes contact with the rifling, so there's no risk of damage to your barrel.

How far from the target should I set up to use this boresighter?

Place your target 25 feet from the muzzle. Center the laser dot on the target, then align your scope crosshairs with the dotted reference lines provided—this will zero your scope for 100 yards.

What comes included with the SL-100?

The complete system includes all adapters and o-rings needed for universal caliber compatibility. There are no additional parts to purchase separately.