Find the art in your life.Features:100% Brand new and high quality!Works with scopes， holographic red dot sights， and variety sights. Durable housing looks like a cartridge case but actually contains the entire laser system and batteries.Insert the batteries and screw the cap on the housing to turn on the laser; remove the batteries to turn off. Insert the entire assembly into the chamber， gently close the action， and aim at a target 20-30 yards away. Adjust windage and elevation of the scope or sights so point-of-aim is zeroed on.Specification:Body Color: GoldenLED Type: Visible Red LaserMaterial: MetalLaser Wavelength: 635-655nm Laser Beam:<5 mwBattery: 4 x LR41(included)Size: 47*13*13mmPackage Included:1 x Laser Bore Sighter4 x LR41 Cell BatteriesJust try， do not be shy.