Nonlethal ammo (6)
I believe the answer is:
blanks
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nonlethal ammo</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for blanks that I've seen before include "Vacancies" , "Explosive cartridges with no bullets" , "Cartridges with explosive charge but no bullet" .)