[User-Friendly] The end barrel laser bore sighter is convenient and easy to use, simply plug-and-play for a quick setup.
[Replacement Supply] The MidTen 17hmr laser bore sight includes 4 sets of batteries and extra O-rings for replacements. The red laser runs on 3 LR41 batteries at once, lasting up to 1.5 hours.
[Precision] The .177cal laser bore sights are factory calibrated for accuracy, eliminating the need for further adjustments. Get closer to your target efficiently.
[Durable Build] Constructed with sturdy brass, the 17hmr/177cal bore sights are secure with O-rings to protect the barrel from potential damage.
[Specifications] Specifically designed for .17hmr and .177 calibers, this Class IIIA laser is less than 5mW for safety.