Site-Lite SL-100 Laser Boresighter

The Site-Lite SL-100 Laser Boresighter (brand part no. 18001) is a chamber-inserted or muzzle-mounted laser tool from Site-Lite that projects a visible laser dot down the bore’s line of travel. Dialing a scope’s crosshair onto that dot gets the optic roughly zeroed before ever firing a live round, which saves ammunition and range time when mounting a new scope or swapping optics between rifles. It’s especially useful for a fresh install where the scope could otherwise be printing well off the paper on the first live shot. Most shooters still confirm and fine-tune zero with live fire afterward, but a boresighter gets that first shot in the right neighborhood.

Key Specifications

• Laser boresighting projects a visible dot along the bore’s line of travel for a rough pre-fire zero.

Frequently Asked Questions

Does this replace live-fire zeroing? No, it gets a scope roughly on target before the first shot; live-fire confirmation and fine-tuning are still needed for a true zero.

When is a boresighter most useful? Right after mounting a new scope or swapping optics between rifles, before spending ammunition dialing in a zero.

Buy the Site-Lite SL-100 Laser Boresighter

Add this boresighter to your gunsmithing supplies order from our Lubbock, Texas gun shop — it’ll ship as soon as it’s ready to go.