Jayne's hero knife was a Roughrider Patrick
Henry Bowie. The stunt knife was cast from
a mould taken of the hero.

Interestingly, this is the only prop handed
over from the Firefly TV show to the Serenity
movie, apart from the space suits.

Adam would have had this in the sheath
whenever he was involved in anything where
he could fall and be hurt by the metal one.
As such, it's hard to say which episodes it
appeared in. I would say that whenever he
had his gun, he had his knife.

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