Equal share of lethal force (4)
I believe the answer is:
half
'equal share' is the definition.
(I've seen this in another clue)
'of lethal force' is the wordplay.
'of' indicates a hidden word.
'HALF' is hidden in the letters of 'lethal force'.
(Other definitions for half that I've seen before include "Wife the better one (joc.)" , "Short distance - steal!" , "shared round" , "Some football" , "one over a couple" .)