SIGHTMARK SM39013 Boresight .303 British cal.

The Sightmark SM39013 .303 British Boresight (Red) is a precision chamber-insert laser boresight designed for fast and accurate optic alignment on .303 British rifles.

Inserted like a live cartridge, it projects a bright red laser along the bore axis, allowing quick sight-in before live-fire zeroing.

Fast Optic Alignment

Speeds up initial sighting and reduces ammunition use.

Benefits

• Fast initial optic alignment
• Reduces ammo consumption
• Compatible with .303 British / 7.7×58mm platforms
• Clear laser reference point
• Ideal for hunting and sport shooting

Chamber Insert Design

Fits directly into the chamber like a cartridge.

Features

• Realistic cartridge-style body
• Stable chamber positioning
• No external mounting required
• Easy insertion and removal

Red Laser Projection

Provides a clear aiming reference.

Features

• Bright red laser dot
• Indoor and outdoor use
• Fast sight adjustment
• Clear point-of-impact reference

Efficient Zeroing

Reduces time and cost during optic setup.

Benefits

• Fewer test shots required
• Faster initial alignment
• Lower ammunition cost
• Ideal for bolt-action and classic rifles

In the Box

• Sightmark SM39013 .303 British Boresight
• 3x AG3 batteries (or 2x AG5 depending on batch)
• Carrying case
• User manual

Technical Specifications