Warlord saves time finding weapon (7)

I believe the answer is:

shotgun

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'weapon' is the definition.
(shotgun is a kind of weapon)

I don't understand the rest of the clue.

(Other definitions for shotgun that I've seen before include "piece" , "No thugs (anag) - weapon" , "Noughts (anag) - type of wedding" , "Firearm used at short range - kind of wedding" , "Hunting firearm" .)

I've seen this clue in The Sun.

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