I just cleaned my PA Pellet. I do not have the breech plug, either. If i would have known more about flintlocks, I would have bought one with it.
I took mine apart to clean it once 3-4 yrs ago. No more. It was a struggle to take apart and to get back together. Now, I am not mechanically inclined like some folks. I know little about the workings of guns and probably don't care to know. Many people would not have problems, I suspect.
I clean it in one piece and hang it upside down by the heat to dry. It has the synthetic stalk, so all I have to worry about is not drenching the inner mechanical parts.