light weight green dot laser sight,laser aiming pointer GF502G light weight green dot laser sight,Size:18.6mm(dia.)x100mm(length)532nm,20mW(milliwatt),it comes with a weaver style mount which is versatile for both 11mm and 20mm guide rail,Curly touch pad switch and always ON/OFF switch,CR2 battery and allen wrenches are included, Green laser sight GF502G light weight