Parts id

Hi all , brought home a pile of various a/c parts recently some of which i can not id , anyone got any ideas?

First is a 20mm ammo feed , has a part number starting with 25 .

Second is a 50 cal ammo feed motor us made , but with british electrical hardware , part numbers on tracks start with 82.

Third is what looks to be a bomb salvo control panel.

cheers dave