Sightmark Chamber Laser Boresight 300 Win Mag (Brass)

Dial in your accuracy and eliminate guesswork with the Sightmark .300 Winchester Magnum Laser Bore Sighter—a must-have tool for hunters, long-range shooters, and precision marksmen.

Engineered for efficiency and pinpoint accuracy, this in-chamber laser bore sighter allows you to align your optics quickly and reliably, saving both time and ammunition.

Crafted from durable, high-grade brass, this bore sighter is specifically designed for the .300 Win Mag caliber, ensuring a secure and precise fit inside your rifle’s chamber.

The high-visibility laser projects a crisp beam downrange, helping you achieve on-target calibration before firing a single live round.

Whether you're initially sighting in a new optic, checking zero after travel, or using it as a training aid for dry-fire or quick-draw drills, the Sightmark Laser Bore Sighter delivers consistent performance in the field or at the range.

Compact and lightweight for maximum portability, it comes packaged with 3 AG3 batteries and a protective carrying case, making it easy to pack, transport, and deploy wherever your shooting adventures take you.

Features / Specs

• Sightmark
• SM39006
• Chamber Laser Bore Sight
• .300 Winchester Magnum
• Laser Wavelength: 632 - 650 nm
• LED Type: Visible red laser
• Output Power: 5 mW
• Battery Type: AG5 (2)
• Battery Type: AG3 (3)
• Battery Life: 1 hour
• Range for Sighting: 15 - 100 yds
• Dot Size: 2 in @100yd
• Operation: On/off end cap
• Material: Brass
• Operating Temp F: 14 to 122
• Includes
  • Carrying case
  • Instructions