Thanks for all the responses man
, I would like to get this one working because I am currently stationed in Okinawa, Japan. Shipping takes forever so I guess I just have to tinker.
This is the clamshell I am using:
I put on the orings in I think the correct order (From left to right: 14, 15, xring):
Update: just fires fine and bolt fully cycles when shooting 1 shot at a time, after the third shot when it starts to ramp the bolt only cycles 1/4 of the way again. Maybe to much friction? Should I change the 15 oring for a smaller one?