New Prop for our Antagonist

Recently I have found a fake old looking flint lock pistol which would look great with our Antagonist and would add greatly to his mise-en-scene. This is due to the antagonist having a old traditional feel to him. This is shown by his old tribal looking sword and by his henchmen wearing old gas masks, which could look like they had just come out of world war I. This fake flint lock pistol adds again to this old traditional adding to his character to enable the audience to stereotype him more easily. The only issue with using this form of pistol is that it is not in keeping with some of the other props inside the teaser trailer as both of the antagonists henchmen and the protagonist have assault riffles which are far more advanced that that of his pistol, this could lead to the teaser trailers believability being deminshed due to clashes in different items timeframe, and where they have originated from.