It is interesting from a historical aspect that the hammer on the trigger release for the bayonet is almost identical to the hammers we now associate with all Western-style firearms. Would be fun to know who first made that style and promoted it down through the years til it became the 'official' style of all hammers.
I have held and shot one of the repo Flinter doubles with a bayonet on it many years ago at a 'Vous in Wisconsin, it was a hoot to shoot! I then traded some plunder for an Italian Caplock repo Blunderbuss in a small caliber, all blued. It shoots like a .410 but has a smaller bore, 28 I recall, not a 28 ga., just marked '28', and was a ton of fun when hunting Woodcock in the Fall and Rabbits in the Winter. Still have it, will have to dig it out and try it on some Cowboy Clays when I retire.
Best regards and good shooting!
'Ol Gabe