Late vartiation with spring loaded dust cover (see page 406 of "MG-34/42 Universal Machineguns, V1" by Myrvang)
Yugo repainted orignal WW2 drum (Gurttrommel).
These are ideal for repainting in German colors.
RAL 7021 is the grey
Y5233-A is the tan (Dupont Centari)