Hi,
English fowler and here is an original example of the kind of export quality gun from exactly your time period. In fact, this gun probably spent most of its working life in America.
Prosperous farmers were by definition, not poor, and could afford a nice gun imported from England. They in fact, imported many of them including some rifles. Richard Wilson and the Turvey family of gun makers were especially popular with prosperous colonists. Trade guns were for trade with the Indians or less prosperous settlers on the frontiers.
dave