Feyachi Laser Bore Sight 12 Gauge Bore Sight Red Dot Laser Boresighter with 3 Sets of Batteries

The 12 gauge bore sight provides the most convenient and accurate method for sighting in 12 gauge shotgun. No more trips to the range to sight in your equipment you can sight in anywhere with this laser bore sight. It designed for firearms chambered in 12 gauge. This device is placed in the chamber, and projects a visible beam on to a wall or other flat surface. Adjust and zero-in your optics or iron sights without ever firing a round. It makes the process much faster, easier, and ensures you don’t waste precious ammunition during these times. Sighting range of the bore sight is 15 to 100 yards. Machined from solid brass. The bore sighter very made and are easy to use. There is no on/off switch,the laser is actuated by tightening the end-cap, and will stay on until loosened again. Specification Construction: Brass Length: 60.8mm; Tail width: 22.4mm; Head width: 20.1mm Laser Wave length (nm:) 632 to 650 Power: <5 mW Sighting Range: 15 - 100 yards Dot Size: 2" at 100 yards Temperature: -10℃ to 40℃ Battery Type: 9 x LR41 (Included)