Single place of ammunition (4)

I believe the answer is:

unit

'single' is the definition.
(synonyms)

'of ammunition' is the wordplay.
'of' indicates a hidden word.
'UNIT' is hidden within 'ammunition'.

'place' acts as a link.

(Other definitions for unit that I've seen before include "Specialised group" , "Detachment of soldiers" , "Small military detachment" , "Element or part" , "One - kitchen cabinet" .)

I've seen this clue in The Globe and Mail.

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