Just picking up on this thread. The MP5 issued to plod are not the fully automatic version, but will fire as fast as you can pull the trigger each time.
A good thing in my opinion when being used in our crowded country.
BTW a good amourer could reconvert it in 5 mins.

My day it was the SLR with a nice wooden stock(or Paddy Wacker as it was known).

And an SLR even quicker