Nails

[Delmonico]

Thats what we're here for.

[Nolan Sackett]

I'd say this is a single barrel percussion muzzleloading shotgun, you can see the barrel tennon and ramrod pipes. - based on the style of the hammer and guard I'd say probably of Belgian make. While possibly a rifle the round barrel, lack of rear sight (what sort of looks like a rear sight is part of the sling IMO), oversized trigger guard, and other points ID'd on the photo suggest shotgun not rifle.
While left handed firearms were not overly common neither were they unknown (after all double barrels used left handed locks) -  Inexpensive muzzleloading shotguns were still being built at this time in pretty good quantity since they were cheap to build and thus sell.........

[Delmonico]

Thanks Nolan, I just didn't know if there were any built that way, as you know little totally surprises me anymore.