Sightmark SM39007 Boresight Red Laser 12 Gauge Chamber-Mount Brass

The Sightmark SM39007 is a chamber-mount laser boresighter purpose-built for 12 Gauge shotguns. Drop the brass body into the chamber of your shotgun and it projects a steady red laser down the bore, letting you confirm and adjust your optic's zero at the bench without burning through a box of shells.

At the heart of the SM39007 is a 5mW red laser operating in the 632-650nm wavelength band. At 100 yards, the device projects a clean 2-inch image on paper, giving you a precise reference point for sighting in a scope or red dot. It is rated for a usable working range of 15 to 100 yards, making it a practical choice for zeroing a shotgun.

The boresighter is built around a solid brass housing sized to seat directly in a 12 Gauge chamber, so it self-centers in the bore for repeatable accuracy. Power is supplied by three AG13 button-cell batteries (included in the box), and the compact design makes it easy to toss in a range bag or pack along on a hunt.

Whether you are a hunter zeroing a shotgun, a competitive shotgun shooter chasing tight groups, or a law enforcement officer confirming a duty shotgun, the Sightmark 12 Gauge boresighter is a fast, money-saving tool to keep in your kit.

The SM39007 ships complete with a carrying case, the AG13 battery pack, and instructions, so it is ready to use right out of the box.