Even Real Steel manufactures can't make reliable feeding drum mags you expect some back street work shop in Asia to make an airsoft one? you have pretty much described the P90 high caps mechanism they jam constantly.Making hi-caps quiet shouldn't be THAT difficult? (including other mag types like STANAG & AK)
Just needs a follower to keep slight pressure on the the BB pile.
Yeah I know easy to talk...
I'm not going to try and design one as 'you know who' will copy it to death if it works...
(Yay 1k posts)