CVLIFE Laser Bore Sight Kit Green Laser fit 0.17 to 12GA Caliber Bright Laser Boresighter

About Laser Bore Sight Kit Laser Bore Sight Kit Green Laser fit 0.17 to 12GA Caliber Bright Laser Boresighter with Big Press Switch Hunting Boresight 【Easy to Use】Our laser bore sight kit comes with an unique system of 16 adapters (#1-#16) and an arbor as an auxiliary tool that fit all .17 to 12GA calibers. Also readily visible by large size numbers on the adapters. Arbor will make the bore sighter more stable on .54-12GA calibers. 【Pre-set Green Laser】Clear and super bright green laser beam isn't easily affected by weather and has a longer sighting range, helping you to accurately zero your sights or scopes even in intense sunlight. Our laser is pre-set, it can be used immediately after press the button. 【Ultra-Long Battery Life】Upgraded battery has an ultra-long battery service life, which means you can use it continuously for up to 5 hours when using the green laser bore sight. Plus, we offer two batteries with each package, and we've included a clear mark on the bore sight's sur