SME Sight-Rite XSIBL243 Laser Bore Sighter .243/.308/7mm-08 Rem Brass

The SME Sight-Rite XSIBL243 Laser Bore Sighter is a chamber-insert boresighting tool machined from brass and factory aligned to project a high-output red laser down the bore axis of .243 Winchester, .308 Winchester, and 7mm-08 Remington rifles. Drop the caliber-specific cartridge into the chamber, close the action, and the laser provides an instant reference point for dialing in scopes, red dots, and iron sights without burning a single round of ammunition.

Each Sight-Rite unit is precision machined to match the chamber dimensions of the listed calibers, ensuring the laser beam sits in true alignment with the barrel. This makes the XSIBL243 an ideal first step before heading to the range, cutting down on the rounds and time needed to get on paper. It is a practical bench tool for hunters, sport shooters, and gunsmiths who want a fast, repeatable starting zero on hunting rifles, varmint rigs, and precision platforms chambered in any of the three supported cartridges.

Powered by alkaline batteries, the unit is compact, self-contained, and ready to use right out of the package. The durable brass casing resists corrosion and fits standard chambers, while the simple on/off design means you can go from case to scope adjustments in seconds.