I must stand corrected. I was thinking of a different style rifle. There are several styles of drum on Traditions rifles. All sorts of warnings abound with respect to voiding any known warranty if you remove the drum. Okay, that said, what does it take to remove the drum. If you are lucky, the drum is threaded into the wall of the barrel. Some of the rifle drums will be threaded into the breech plug and become part of the breech. The through breech style of drum is much more difficult to convert.
In my case, I owned a cheap percussion CVA/Traditions Kentucky pistol and I had a CVA flint lock. The drum was easy enough to remove. The thread size for the drum was a most uncommon 9 mm diameter bolt. I had to turn down a 10 mm diameter bolt and then cut the threads. I drilled an inside chamber in the liner and drilled the touch hole after I had the lock in place. It does fire reliably.