Just purchased a Saiga 12, anyone know how to install the gas piston in the thing, I read the manual and it discribes a 1 or a 2 position, but no other info at all, unless I'm missing it. when I bought the gun the shop owner said it was ready to go, but when I got home and opened the box their was this piece rolling around in the box that looks like it could be a gas piston. This is the first automatic weapon that I've ever bought, I'm usually a SXS and single shot rifle shooter, unless you count a 10/22 my wife got me for christmas around 20 years ago. I would hate to fire the Saiga if that is the piston and it should be installed in the gun.....................stegmaier