Musket attachment (7)
I believe the answer is:
bayonet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">musket attachment</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bayonet that I've seen before include "Lethal Weapon" , "one's attached to one's rifle - that's sort of fitting" , "Type of light bulb fitting" , "Muzzle blade" , "Stabbing weapon" .)