To be any different, it needs to be fixed! (7)
I believe the answer is:
bayonet
'it needs to be fixed' is the definition.
The definition suggests a singular noun which matches the answer.
'to be any different' is the wordplay.
'different' indicates anagramming the letters.
'to'+'be'+'any'='tobeany'
'tobeany' anagrammed gives 'BAYONET'.
Can you help me to learn more?
(Other definitions for bayonet that I've seen before include "Knife fixed to the end of a rifle" , "Pointed weapon" , "Muzzle blade" , "one's attached to one's rifle - that's sort of fitting" , "Stabbing weapon" .)