Clip-fed submachine gun (4)
I believe the answer is:
bren
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">clip-fed submachine gun</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 bren that I've seen before include "Weapon" , "Machine-gun" , "World War Two machine gun" , "Light machine gun (made in Brno and Enfield)" .)