24000 SiteLite SL-150 Ultra Mag Laser Professional Boresighter

SiteLite SL-150: Extended Battery Life and an Ultra-Bright Red Laser

The SiteLite SL-150 Ultra Mag Laser Professional Boresighter is designed for hunters and shooters who want a reusable magnetic laser boresighting system with extended battery life. Its ultra-bright red laser and magnetic muzzle attachment help establish an initial sight alignment before live-fire zeroing. Strong magnets in the arbor help center the laser at the muzzle, while the adapter and O-ring system accommodates a broad range of firearm applications.

The SL-150 uses a single CR2 lithium battery, included with the kit, and is rated for up to 40 hours of continuous operation. It also includes the SRL-100 Scope Reticle Leveler, boresighting targets, Ballistic Targeting System software and a hard-shell carrying case. These accessories make the SL-150 a complete setup for aligning an optic and preparing a firearm for range zeroing.

How the SL-150 Boresighting System Works

The SL-150 attaches magnetically at the muzzle rather than using a laser cartridge inserted into the chamber. Its adapter and O-ring system helps position the laser along the bore. With the laser projected onto a target, you can adjust the scope or sights to establish a preliminary alignment before confirming the point of impact with live ammunition.

The included SRL-100 Scope Reticle Leveler helps level the scope reticle during installation. The included Ballistic Targeting System software lets you enter relevant firearm and sight information to generate a custom boresighting target. Follow the manufacturer's instructions for setup and use.

SL-150 Features and Included Accessories

• Ultra-bright red laser: Provides a visible aiming reference for preliminary sight alignment.
• Magnetic muzzle attachment: Strong magnets in the arbor help center the laser at the muzzle.
• Extended battery life: Uses one included CR2 lithium battery, rated for up to 40 hours of continuous operation.
• Adapter and O-ring system: Accommodates a wide range of firearm applications using the appropriate setup.
• SRL-100 Scope Reticle Leveler: Helps level the scope reticle during installation. See the SiteLite SRL-100 Scope Reticle Leveler for additional details.
• Ballistic Targeting System software: Helps create a custom laser boresighting target based on your entered data.
• Targets and storage: Includes a laser boresighting target, a sight alignment verification target and a hard-shell carrying case.

Replacement O-Rings and Accessories

If you need replacement O-rings for a particular caliber or application, browse our SiteLite replacement O-rings by size. These are individual size-specific packs, allowing you to select the appropriate replacement size rather than purchase a full assortment.

For a multi-size assortment, choose the separate SiteLite SL-ORINGSET replacement O-ring set. The size-specific replacement packs and the SL-ORINGSET assortment are different products.

Compare the SiteLite SL-100, SL-150 and SL-500

Choosing between SiteLite's magnetic laser boresighters comes down to the features that matter most in your setup. The SiteLite SL-100 Mag Laser Professional Boresighter is the entry model, while the SL-150 adds an ultra-bright red laser and extended battery life. The SiteLite SL-500 Ultra Mag Green Laser Professional Boresighter uses a green laser.

For a side-by-side breakdown of the three models, read our guide to SiteLite SL-100 vs. SL-150 vs. SL-500. It compares their features and helps you determine which boresighter best suits your needs.

For more background on laser visibility and boresighting performance, see our article on laser boresight accuracy and the SiteLite SL-500. You can also browse our complete SiteLite product selection.

Confirm Your Zero with Live Fire

A laser boresighter provides a starting point for aligning a scope or sights; it does not guarantee the firearm's final point of impact. Confirm zero with live ammunition at a suitable range, following all firearm safety procedures and the manufacturer's instructions. Always ensure the firearm is unloaded before installing or removing the boresighter.