If returning real weapons, should get these warnings (4,6)
I believe the answer is:
fire alarms
'these warnings' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'if returning real weapons' is the wordplay.
'returning' is a reversal indicator.
'weapons' becomes 'arms' ('arm' can be a synonym of 'weapon').
'if' backwards is 'fi'.
'fi'+'real'+'arms'='FIRE-ALARMS'
'should get' acts as a link.
Can you help me to learn more?
(Other definitions for fire alarms that I've seen before include "Warning devices" , "They warn of danger" .)