A lot of guns were made for the Indian trade. The trade was in all parts of North America. Hudson's Bay watershed, Great Lakes watershed, the Southeast, Pacific Northwest, Mississippi valley, west to the Shining Mountains.
Gooding estimates that the survival rate of pre-1800 trade guns to be 1/10 of 1%; perhaps 1% thereafter. The survival rate for guns in original, intact condition is even lower. The 1867 dated one in this thread is superior; the 1857 one I show is more typical.
Of the thousands of guns the HBC traded into the Hudson's Bay basin, 1670 to 1710, there is not one surviving intact specimen. According to Hansen, there may be one surviving 17th century Dutch trade gun.
There is quite a bit of information about numbers ordered for the trade in Hansen and Gooding.
Where I grew up in SW Ontario, the NW guns one would see weren't actual fur trade guns; they looked the part, but had the King's Mark, and had been supplied to HM's Indian Allies during the 1812 unpleasantness and thereafter.