WE Hi-Capa 5.1
 

Just got my 2nd GBB, A WE Hi-Capa 5.1 Government model.

I got it used off the forums here.. When I fill the mag with propane it all hisses out until it is empty. Could this be a problem with my tip that I am using to fill the mag. (Works fine with M11A1)

If I rotate the mag while it is seaping out it will slow down a little bit but does not stop untill it is all leaked out.

WE

All hicapa mags I got from that brand is leaking (or fill valve is broken)

You can use some TM mags in there no problem and it solves the issue.