I would have thought that at least the Americans would have got their firearms right. First off flintlocks are on the right hand side of the musket not the left, secondly you cannot fire a flintlock with the frizzen forward and thirdly some of the battles they fought were with percussion muskets that didn't come out until decades later. In the last episode Kit Carson seemed to be firing multiple shots from a Civil War era percussion rifled musket without ever stopping to load.
