Dear customer: Since the laser bore sight is placed in the gun chamber for use, the structural design is very compact. Therefore,there is no special power switch.Install the battery and screw on the back cover to start working. Remember to take out the battery after use...

MOSANDON is a professional optical instrument manufacturers with more than 10 years of experience. Product Parameters: Item Name: Laser bore sight Laser Wave Length: 635 to 655nm Laser Type: Visible red dot Max Output Power: Less than 5mW Product Material: Brass Sighting Range: 15 to 100 yards (25yards is recommended) Laser Dot Size: 2 inches a..