Curious... I've always been wondering on where the hell you got that ball valve you used for ya riot gun....It's very, very odd...
I got it at a store...
It is a brass compression fitting-BV commonly used around fire hoses in buildings in my country.
They came in handy to connect all sorts of stuff while the main "system remained the same.
I can get a lot of odd stuff, not all, but some of those things are quite usefull for spudding.
The great thing is, I don;t need BV's like that any more now I can pretty much tap every thing myself.
I have a design in mind for the revived-and-improved MMG.I have finished the rise tube and ammo feed set up and the pressure lines to power it.
Notice I did not say barrel...
That..will have to wait until I got permission from the pregnant boss
She somehow feels it's not a priority..
Anyway..that will not be a problem, just need to get some ( common around here) 15 mm copper.
The principle is to have the ammo follow the constant airstream, not unlike a cloud.
The difference will be the pressure used ( 40 bar) and improved flow.
I believe the Girandoni rifle already prooved what 40 bar behind a big lead ball can do over two centuries ago.