The Sightmark Laser Boresight, 12 gauge (brand part no. SM39007) chambers like a live round in a firearm built for 12 gauge, then projects a laser dot that shows exactly where the bore is pointed. Sightmark designed it as the most convenient way to get a rifle or shotgun roughly on paper before ever firing a shot, saving both time and ammunition at the range. Live fire is still needed to fine-tune the zero and compensate for bullet drop at distance, but the boresight eliminates the guesswork of an initial sight-in.

Key Specifications

• Chambered for 12 gauge, seating in the chamber like a standard round.
• Projects a laser dot to show point of aim without firing a shot.
• Weighs approximately 0.3188 lb, light enough to leave in a range bag.
• Includes a lightweight carrying pouch to protect the laser unit between uses.
• Built for hunters, competitive shooters, and law enforcement who need a fast initial zero.

Frequently Asked Questions

Does this replace live-fire sighting entirely? No, live fire is still needed to fine-tune the zero for bullet drop at distance, but this gets the optic close enough to hit paper on the first shots.

How does it work? The boresight chambers like a normal cartridge for 12 gauge and projects a laser dot showing exactly where the bore is aimed, so the scope or sights can be adjusted to match.

Is a case included? Yes, a lightweight carrying pouch ships with the boresight for storage and field use.

Buy the Sightmark Laser Boresight, 12 gauge

Save ammunition and range time on your next sight-in. Sightmark built this chamber-type laser boresight to get you on paper before you ever pull the trigger. See the rest of our scope accessories and parts and order from our Lubbock, Texas gun shop for fast, insured shipping.