A missile launcher cunningly disguised as a leg cast and demonstrated by Q to a bemused Pierce Brosnan in ‘GoldenEye’ was one of several bright ideas that didn’t make it into the field.

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The lethal properties of a bagpipe flamethrower and machine gun were seen briefly in ‘The World is Not Enough’.

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Desmond Llewelyn played Q in numerous Bond films and is the actor most closely associated with the character.

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“Experimental...