Here are a couple of modern renditions of two distinctly different rifle types.
First, the Kentucky "Poor Boy". Flint ignition, 43" barrel in .50 caliber, which is big for the type. All iron "furniture", no frills. The Pennsylvania Rifle was simply a far more ornate version of this:
Here is a Thompson/Center "Hawken" as they call it, although it is far closer to the German Jaeger than the later Hawken. 28" barrel in .54 caliber, percussion ignition:
