To add to what has been already said "Trade Guns" were also the guns mass manufactured, and sold in hardware, and general stores to the people moving west The Henry family of Pa., Lyman, Deringer of Philly, were among the producers of these guns, not only to the fur trade, but to the Dept. of Indian Affairs, and to the general mercantile trade of the 1830's, 40's and into the late 80's. Flint guns were produced up to the 1880's for indian trade, while percussion pretty much became common in the middle to late 1830's, as caps became more readily available in St Louis and westward. Bill