Hunter's gun (5)
I believe the answer is:
rifle
'hunter's gun' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rifle that I've seen before include "Weapon - sack" , "Security provider with stock" , "Plunder - ransack" , "Steal and carry off - firearm" , "Ransack; a weapon" .)