MKE is sold via various vendors throughout the EU if they currently produce for the civilian market at a given time. B&T used to
make B&T96's in the past using MKE parts (as did
Oberland Arms, at least partly using "B&T" parts, which in turn came from other sources), and a few other minor manufacturers made their own versions using either POF or MKE parts (Schwaben Arms with their M41/05 for example,
see page 5 and page 16).
Other than that there is no real MP5 clone market in the EU and the US market offerings don't make their way here because these minor manufacturers are usually not registered manufacturers and exports (might) require that. They have a huge market right at home and don't need to involve themselves with that hassle.