Weapon to reveal with search (3,5)
I believe the answer is:
air rifle
'weapon' is the definition.
(I've seen this before)
'reveal with search' is the wordplay.
'reveal' becomes 'air' (air can mean to reveal or release).
'with' means one lot of letters go next to another.
'search' becomes 'rifle' (I've seen this before).
'air'+'rifle'='AIR-RIFLE'
'to' is the link.
(Other definitions for air rifle that I've seen before include "Shooter" , "Pellet firer" , "Type of gun" , "Rail fire (anag) - weapon" , "Pellet gun" .)