Arms depot (7)
I believe the answer is:
arsenal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">arms depot</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 arsenal that I've seen before include "Where the guns are and who are The Gunners are" , "Munitions store and English football team" , "Place where guns and ammunition are stored" , "2014 and 2015 FA Cup winners" , "Weapons/ammo store" .)