Fruit gets stolen as ammunition (9)
I believe the answer is:
grapeshot
'ammunition' is the definition.
(historically a type of ammunition)
'fruit gets stolen' is the wordplay.
'fruit' becomes 'grapes' (grapes are fruit).
'gets' means one lot of letters go next to another.
'stolen' becomes 'hot' (stolen goods are 'hot').
'grapes'+'hot'='GRAPESHOT'
'as' acts as a link.
(Other definitions for grapeshot that I've seen before include "Small iron balls fired from a cannon" , "Great Balls of Fire" , "Short page (anag) - ammunition for cannon" , "one could get peppered with it!" , "Charge for barrel" .)