MidTen Green Laser BoreSight Kit With Button Switch, Aluminum Material, Easy To Use

Feature: [Strong Magnetic Connection]: No need to get in touch with the rifling of barrel, reducing wear. [Clear and Bright Laser]: Can works perfectly in all weather conditions. [Big Button Switch]: Sensitive button switch, just slightly press to turn on/off laser. [Reliable And Professional]: MidTen has been focusing on hunting products, especially the boresighter for many years. Specification -- Length: 78.92mm; Tail width: 33.87mm; Head width: 15.8mm -- Laser Wave length: 510 to 540 nm -- LED Type: visible laser -- Power: -- Laser Class: Class IIIA laser --Material: aluminum -- Sighting Range: 15 to 100 yards -- Dot Size: 2 inches at 100 yards -- Operation: On/Off button -- Temperature: -10℃ to 40℃ -- Battery Type:1 XER14250 (Included) Package included --1 x Laser boresighter --1 x ER14250 Battery --1 x Instruction It can be used in any caliber as long as it is a flat steel muzzle. Concentric Circles To Assist Centered: New concentric circles on the magnet surface can assist the bore sight to better center at the muzzle. Auxiliary lines help center, improve your zeroing accuracy. This also eliminates the risk of of residual pollutants in the barrel. 32Hrs Battery Life: Upgraded 32 hours of stable red laser output, convince for you to zero with boresighter at any time during long-term outdoor activities. Class IIIA laser; less than 5mW.