[devbro]

Update on the modification:
After 3000 bbs, 1278 on sunday at siege, I can say this modification is indeed stable. I believe using a vfc reinforced gearbox shell was a wise idea. I only tested M110 ace1airsoft spring which achieves 340 fps on this built.

The issues I ran into during testing were:
1. broken piston: this happened because I did not stabalize the spring guide. making sure the spring guide is screwed in seemed to have solved this problem

2. hopup mess up: This was really my fault, i literally dropped my gun mid game and something went off with the hopup and fps start varying from 50 to 340. opening an reclosing hopup fixed this issue.

At this point I am considering the same modification on my other gun but that should wait for when I got free time.