Is it the PA pellet rifle or the Pennyslvania longrifle? If it's the PA Pellet rifle, it is not suitable for Rev War reenactment, but could probably pass muster for fur trader era.
If it's the longrifle, despite the fact that it is advertised as "'authentic for reenactment use' from the American Revolutionary Brigade", it is NOT a rev war era gun. It is a highly decorative rifle of golden age architecture, not seen until after the Rev War. I bought one because of that "certification" and as I found out more about longrifles, could easily ascertain that the rifle did not fit into the Rev War time period.
That said, it is a good, reliable, accurate shooter and visually appealing rifle. It hunts just fine.
Even though it isn't really accurate for Rev War rifle portrayal, none of the events I've attended over the last four years have prohibited my use of it, and I'll be using it again this weekend. If you are reenacting the era after the Rev War, it fits into there just fine.
If you just bought it, and haven't fired it yet, you might consider returning it and getting a less decorative more accurate representation for reenactment. I am finally in the process of purchasing a much more historically accurate rifle now, and expect to have it in-hand in about 3 months.
So, I'd recommend getting something different for reenacting if it's not too late. Ask some questions about rifles you are considering from the folks here on the forum before you make your purchase.
If returning it is not an option, then just use it and enjoy it. The one that I have has a particularly nice piece of wood, and after I get my new rifle I may try my hand at removing a lot the excess wood that is typical on production rifles. And, as I said before, it is a good shooter.
Hope this helps,
Twisted_1in66