Tiger Rock 7.62x39mm Cartidge Laser Bore Sighter Brass. 62x39mm Cartridge Laser Boresighter is an essential tool for those who love fast precise boresighting. Featuring a 20 yard sighting range this Bore Sight from Tiger Rock is ideal for quickly dialing in rifles and shotguns chambered in 7.62x39mm. The Tiger Rock 7.62x39mm Boresighter features a brass/high quality aluminum casing for a durable casing that is also resistant to corrosion. For a powerful and highly visible laser beam the Tiger Rock Red Laser Boresighter will improve any shooter's accuracy. (AG3 Button Cell Batteries Not Included) Specifications for Tiger Rock 7.62x39mm Cartidge Laser Boresighter: Manufacturer: Tiger Rock Caliber: 7.62x39mm Included Accessories: None Battery Type: AG3 Gun Model: Universal Beam Color: Red Additional Features: Batteries not Included Condition: New Battery Quantity: 3 Features of Tiger Rock 7.62x39mm Cartidge Laser Boresighter: Fits 7.62x39mm Chambers; Brass / High Quality Aluminum casing; Laser wavelength: 635-655 nm; Laser beam: < 5mW; Sighting range: 20-30 yards; Dot size: 1.5" at 100 yards AG3 Button Cell Batteries Not Included Package Contents: Tiger Rock 7.62x39mm Cartidge Laser Boresighter Tiger Rock LBS762X39: 7.62x39m Cartidge Laser Bore Sighter Brass