Brian,
What do you mean, exactly, by "functioning". Prop/Stage/"Re-inactment" types of guns abound that have "working" hammers, frizzens, and even spark and can set off flash powder, but are not designed to fire a projectile. There are TONS and TONS of those out there, and they are WAY CHEAP, like 30 bux or so for a really fancy pirate type pistol, done very well... But it won't fire a ball.
DGW, Dixie, has alot of kits in general, a few, would qualify as "pirate" type ones, the big bore ones are going to be between, 200-300 for a kit, and the smaller, more unusual curio types at between 100 and 200... here are a few pics from their catalogs...
This one is a bit pricey, at 398.00 for the kit, but it's a high end Pedersoli, so it's well made. It's a 58 Cal Harper's Ferry Pistol Kit.
This one, also a Pedersoli, is a "Queen Anne", 50 Cal, at around 315.00.
I don;t have any of the pics saved off to my computer and loaded up to photobucket yet, but there is an outfitter out there, called, The "Middlesex Village Trading Company", who carries NOTHING except 17th century types of flints, fully assembled, made in India, BUT, the owner painstakingly goes through every single gun, and fine tunes the hammers, the frizzen geometry, tunes the flash hole, the whole 9 yards, his STANDARD price for a fully operational, very, very well done reproduction, assembled, is $349.00, a couple come in at $299.00, with one or two in the bargain basement at on or about $199.00... Give them a gander, they are WELL WORTH the look I garauntee you. They even carry, the ONLY available currently made flintlock double barrel side by side shotgun, at on or about $525.00 !!! and it's a NICE ONE, fully nickel plated, Breech to Muzzle !!! ALL OF IT is NICKEL, every single inch !!!
The following three pics are percussion kits, from Dixie, but they could have been very easily carried by pirates, and they are very interesting guns, and I am sure, fun builds, they all come in at between $100.00 to $170.00.
Those guns I beleive are made by Connecticutt arms, and you may want to visit their site as well, I am sure they have others too.
The following composite pic is just and example of the kinds of Prop/Stage/Re-inactment pistols out there, all for between $30.00 to $50.00, except for the blunderbuss, which I think, comes in at around $80.00.
In addition to the three outfits mentioned, CVA and Traditions, both carry some kits, so check those guys out too !!!
I hope this helps !!!
Sincerely,
ElvinWarrior... aka... David, "EW"