Raising guns for deer (4)
I believe the answer is:
stag
'deer' is the definition.
(stag is a kind of deer)
'raising guns' is the wordplay.
'raising' says the letters should be written backwards.
'guns' becomes 'gats' (gat is a kind of gun).
'gats' reversed gives 'STAG'.
'for' acts as a link.
(Other definitions for stag that I've seen before include "No women allowed" , "Stock Exchange speculator standing" , "Hart" , "one may get in a rut" , "Stock market speculator" .)