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This 16-adapter set is designed to fit all .17-12GA calibers, making it easy to use the laser bore sight. Each adapter is engraved with a clear serial number, helping you quickly find the right one.

The included arbor fits .54-12GA calibers, allowing the boresighter to fit barrels perfectly and providing improved stability and accuracy.

The laser bore sight kit emits a straight red laser beam, giving you a precise reference for zeroing in on your optics. The beam is bright, with a max output power of less than 5mW, and is classified as a IIIA laser.

The kit comes with a sensitive push-button switch and two sets of improved LR44 batteries (six batteries total). Each set lasts up to 2.5 hours, making it easy to replace batteries when you're working outdoors.

Using the laser bore sight is easy. It's already been calibrated at the factory, so you don't need to make any adjustments. Simply choose the right size adapter, install it on the boresighter, and place it in the barrel.