Not being funny but the answer is yes, but probably no. They had a proprietary method for the breech. The Drum/touch hole must be removed first, as it is a thru bolt, that screws thru the breech locking it in, and only then can you try to remove the breach. Problem is that it is a pressure fit, and requires heat, and cold, and a lot of swearing, and language not appropriate for this site. I've done it once in my younger, and curious days, and I can't remember why I wanted to remove it They were never intended to be removed by a novice. Is there a reason to pull it, or is it just curiosity. Monetarily they don't have a lot of value, but were great shooters, and a number of us would still like to have one as a shooter.
Bill