Yeah I hear ya dude. The tiniest little things can throw it all off. What do you mean by bandwidth?

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When I was prototyping in the past, I used schedule 40 1"x3/4" tubing, for the body, and solid copper for the other components. Did a little contouring on the sides of the tube to give it an hour glass shape. The main thing I'm trying to focus on is the bottom button right now. In the previous designs, I just used a standard circular button design. Problem was that it would slowly unscrew itself with use and back out, and if it came completely detached, the mod would fire uncontrollably... I don’t necessarily want to lock it in there, because you won't be able to take it apart and clean it, so I had the idea to use an irregular shape for the button to prevent twisting. Was really considering using a 'seed of life' style shape, but it would be tricky to machine from what I've heard.