The DJI M300 RTK normally has a take-off weight of approx. 6.5 kg. This makes it one of the heavier drones on the market.
It is a stock drone. This means that with a small EU drone licence (A1/A3 certificate of competence) you can fly in sub-category A3, i.e. far away from uninvolved persons and at a distance of 150 m from industrial, residential, commercial and recreational areas.
The same regulation also applies to its successor, the DJI M350, which, despite being certified as a C3 drone, can only be flown in sub-category A3.
If operation is not possible, an operating licence must be obtained to switch to the SPECIFIC category. Further information can be found here.