So nearly a year later I can finally say the project is complete. Not too say it didn't have issues. At first it would only shoot 1-2 bb's at a time unless I pushed the bottom of the mag up. Then every other shot would cause jamming in the gear box only to be fixed by firing full auto.
So after a little research and some time I figured out how to fix the issues. The misfeeding was due to the magazines' retaining wedge. After trimming a few mm's off that cured the problem. The jamming was due to a weak battery which was like over charged by my crappy old charger. New battery and new charger took care of that issue.
So now, finally, after much delay I have a completed project. I also was able to test fire the gun through a chrono last night with surprising results. The fps range is very sporadic ranging from 220 to 445(0.20g bb's). After a few more mags it managed to settle in around 405-421 with an occational drop to 385 and a few times all the way down to 220. Is this normal for a new gearbox to fluctuate this much? Will it eventually settle into a "normal" range?
I'm not sure I like how fast its shooting and was hoping it would shoot around 380-395. Using .23's I could proabably achieve this range but its not really a fix.
Well here are a few pic's, enjoy!
Shot with .23g bb's
