The Sightmark Triple Duty Universal Boresight is a multi-caliber laser boresighting tool designed to help shooters get on paper faster during initial scope or sight setup.
Type: Universal arbor-style laser boresighter
Caliber Range: .17 to .50 caliber rifles and handguns
Laser: Red laser, visible 15-100 yards
Arbors Included: Three expandable mandrels (small, medium, large bore)
Power: Three LR41 batteries (included)
Material: Brass arbor body, polymer components
Use: Initial sight alignment before live-fire zeroing
