like i said its messy & i dont have anything to make it a gif image which would make it a lot easier to understand also i dont think any software for mac can make a gif image.

just made it on paint not i haven't tried making it yet cause im still making another air gun but here it is for you if you want to have a shot at it

oh yeah the green things are rubber bands

sry for making it messy

yeah but it doesn't have the gas behind the piston but sort of in the middle and it is also more compact isnt it?

isn't the gear box for machine guns like p90 & mp5s etc...