Hey all, its been a long time since I've posted, and a year since I've played at an event. However, my Maruzen Type 96 still racks 540fps seven years strong. Noticing a lacking of parts for my rifle, I have resorted to making my own. Starting with a 1" solid round stock of 6061 T6 Aluminum, I tossed it on my prehistoric lathe and went to work. Unfortunately I didn't take any pictures of the process, in the zone jamming to some Suicide Machines, but I was able to churn out a piston.
It's a replica of my very old discontinued OK Japan piston (blue), but even lighter and stronger even though the OK is milled out for weight loss. It uses a Cup Type piston head, which produces the most consistent fps for a spring rifle. My prototype isn't perfect, but within the next two I hope it will be. It has a 13.5mm bore for APS-PDI springs, 21.5grams in weight.
I'm going to make some cylinder heads and spring guides hopefully. Not entirely sure if I will be selling them, but if this is something that will help you get your rifle working again, let me know. Too many companies are going out of business, as soon as I get a mill ill be making trigger components.