I will probably google it and look around, but was curious in the meantime if anyone knew of a good source for springs? I'm not looking for marker specific springs, just a general source for them. As an example of what I am looking for is a softer spring to replace the one on a pump kit I have. I recently came across an XM15 pump kit that someone had replaced the spring on and it was considerably lighter than the stock spring. I meant to swap it off onto the other kit I had, but forgot and now I would like to find one. Any thoughts?
Also, is there an easy way to measure spring pressure? I had thought about turning my scale on, putting the spring on it and pushing, but not sure exactly how to measure it...? Anyone have an easy way to do this?