SIGHTMARK SM39007 12Ga Boresight

The Sightmark SM39007 12Ga Boresight (Red) is a precision chamber-insert laser boresighter designed for 12 gauge shotguns.

It inserts like a real shotgun shell and projects a bright red laser along the bore axis, allowing fast and accurate alignment of optics, red dots, or sights before live-fire zeroing.

Fast and efficient zeroing

Designed to speed up shotgun sight-in while reducing ammunition use.

Key benefits:

• Fast initial zero without live fire
• Saves ammunition and time
• Compatible with all 12 gauge shotguns
• Clear laser reference point
• Ideal for hunting and tactical use

Chamber insert design

Functions like a real shell in the chamber.

Features:

• Realistic cartridge-style body
• Precise chamber fit
• No external mounting required
• Quick insertion and removal

Red laser projection

Provides a clear aiming reference.

Features:

• Bright red laser (632–650 nm)
• Approx. 2-inch dot at 100 yards
• Suitable for indoor and outdoor use
• Fast optic adjustment

Practical use

Used as a first step before live-fire zeroing.

Applications:

• Shotgun optic alignment
• Red dot setup
• Post-transport zero checks
• Training and dry-fire practice

In the Box

• Sightmark SM39007 12Ga Boresight
• Batteries (AG3 or AG5 depending on batch)
• Carrying case
• User manual

Technical specifications