What's the cause?

[Vlim]

Hi,

Do you use the magazines that came with the gun? (plastic bottom with either Mauser/Interarms and-or 'made in holland' on the spine).

My Mauser Parabellum really doesn't function with the magazines that came with the gun. I use Mec-Gars instead, they work perfectly, apart from the hold-open most of the time, as you mentioned as well.