I ordered a captured spring with a tungsten guide rod from Glockmeister. When it came, it was labled as stainless steel. Could someone weigh their Glockmeister tungsten rod with captured spring attached so I can be sure which one I have? Or if you have their stainless rod with spring, could you weigh that? I know that the density of the tungsten is a little more than twice that of the stainless, so I can figure it from either one.