The Musée de l'Armée in Paris holds this perfectly preserved specimen of a Nuremberg hackbut of ca. 1535-40, complete in all its original parts; it was never fitted with a ramrod.
You can see how close I got to the original by choosing the Ingolstadt lock mechanism as an adequate association.
Interestingly, the tinderholder on the Paris piece is a movable clamp, instead of a wing nut.
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