Section 5 relates to prohibited weapons, which are basically things which are completely illegal to own. Period!
It doesn't just include guns, but relates to C.S/Pepper spray, butterfly knives, hollow, spiked kubotans etc. Basically things that are deemed 'specifically dangerous' by the secretary of state.
In order to posess them, you need to have a licence granted by the secretary of state.
Chuck it in google, there's quite a bit on there
Ferret