Perhaps rifle stable containing listening equipment
I believe the answer is:
firearm
'perhaps rifle' is the definition.
'firearm' can be an answer for 'rifle' (thesaurus). I am not sure about the 'perhaps' bit.
'stable containing listening equipment' is the wordplay.
'stable' becomes 'firm' (similar in meaning).
'containing' is an insertion indicator.
'listening equipment' becomes 'ear'.
'firm' placed around 'ear' is 'FIREARM'.
Can you help me to learn more?
(Other definitions for firearm that I've seen before include "dangerous weapon" , "One's fired" , "piece" , "Rod" , "Colt perhaps" .)