Crossword Genius

Gun carrier a composer's taken to Her Majesty (7)

Ross

I believe the answer is:

holster

'gun carrier' is the definition.

'a composer's taken to her majesty' is the wordplay.
'a composer' becomes 'holst' (Gustav Holst).
'taken' is a charade indicator (letters next to each other).
'to her majesty' becomes 'ER' (Elizabeth Regina).
'holst'+'er'='HOLSTER'

(Other definitions for holster that I've seen before include "Pistol sheath" , "Gun case" , "Leather case" , "Gun-holder" , "armrest" .)

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