Weapon bringing shock and awful tears (5)
I believe the answer is:
taser
'weapon bringing shock' is the definition.
'awful tears' is the wordplay.
'awful' is an anagram indicator.
'tears' is an anagram of 'TASER'.
'and' is the link.
(Other definitions for taser that I've seen before include "Electrical weapon" , "A shocking thing" , "police weapon introduced" , "Device used to stun someone temporarily" , "Paralysing device used by police" .)