Civil War weapon (7)
I believe the answer is:
bayonet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">civil war weapon</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 "Pointed weapon" , "Rifle attachment" , "Muzzle blade" , "Kind of knife attached to a rifle" , "As soldier" .)