SIGHTMARK SM39012 .50 Cal Boresight (Red)

The Sightmark SM39012 .50 Cal Boresight (Red) is a chamber-insert laser alignment tool designed for fast and precise optic zeroing on .50 BMG platforms.

Inserted directly into the chamber like a live round, it projects a bright red laser along the bore axis, allowing quick and efficient optic setup before live-fire zeroing.

Fast Optic Alignment

Speeds up the zeroing process significantly.

Benefits

• Fast initial optic alignment
• Reduces ammunition usage
• Designed for .50 BMG rifles
• Simple chamber-insert operation
• Ideal for long-range precision setups

Chamber Insert Design

Fits directly into the rifle chamber.

Features

• Realistic cartridge-style body
• Stable chamber positioning
• No external mounting required
• Dedicated .50 BMG compatibility

Red Laser Projection

Provides a clear aiming reference.

Features

• Bright red laser dot
• Suitable for indoor and outdoor use
• Fast visual feedback
• Clear point-of-impact reference

Efficient Zeroing

Reduces time and cost during sight-in.

Benefits

• Fewer test shots required
• Faster optic setup
• Lower ammunition cost
• Efficient pre-zero alignment

Compatibility

• .50 BMG

In the Box

• Sightmark SM39012 .50 Cal Boresight (Red)
• Batteries (AG3 set)
• Carrying case
• User manual

Technical Specifications