So I am currently in the process of designing a baffle structure for a diy 9mm can. I will be using a combination of formed "M" style freeze plugs and "M" style cones. The suppressor will be run on a 9mm ar. The picture I drew up is not to scale but I was thinking of using a blast chamber with a spring inside followed by 2 cones followed by 4 freeze plugs. My question is should I replace one of the cones and put two more freeze plugs in it's place or go with the current design? No work will begin until I have my form 1 back, just trying to pass the time constructively.