Weapons maker, one who did time with mutineer (8)

I believe the answer is:

fletcher

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'weapons maker' is the definition.
'fletcher' can be an answer for 'maker' (I have seen 'Maker of arrows' mean 'fletcher' so perhaps 'maker' could also mean 'fletcher'). I'm unsure of the 'weapons' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for fletcher that I've seen before include "Maybe Christian" , "Arrow-maker" , "weapons manufacturer" , "Manufacturer of bows and arrows" , "Old playwright" .)

I've seen this clue in The Independent.

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