Welcome to the store.Features:100% Brand new and high quality!The laser unit cartridge fits 9mm.It projects a straight laser beam allowing precise optical adjustmentsto sight in your scopes & sights.Simply place batteries in end cap-twist and end cap to turn on-and place in chamber.Specifications:Laser output: less than 5mw.Wavelength: 635-655NWMaterial: CopperLengh: 30mmColor: CopperyPackage includes:1 x 223REM Laser SightLove shopping and Love life