I know this was made in the infamous Afghan "Gun Bazaar" I also have a little history on this piece. It was used by an Afghan villager to kill Russians during the 80's Russian invasion. After the USA invasion to rid the country of the Taliban and the subsequent time of relative peace that followed, A Major Richards was presented this piece by the villager that was then the village leader. It was a token of appreciation for the 3 tours of duty that the Major spent there building and returning the village to a livable place. The Major brought it home, and some years later, died peacefully in Texas. This one came from that collection. I have torn it down and it had decades of gunk, oil, what smelled like diesel or maybe camel dung and who know what else. The barrel appeared to be about a 45 caliber until I got it cleaned out. It now measures about 70 caliber. Surprisingly, the tube is pretty smooth and is smooth inside and out. The finish is a wiped on brown color. No rust was found inside the barrel, outside the barrel or in the lock. The nipple appears to be a musket nipple with a square base and a hole big enough to to pass a 3/16 bit through. So I will need to replace that. I had to soak it for 2 days to get it to finally move, then with a 12 point socket and a small bar. But that part is now done. The threads on the nipple are slow twist, very slow. The diameter of the threaded part is .314 Ptretty massive ignition piece eh? Before I start buying stuff I don't need, can anyone give me a definitive guess what this may be or a part number of a replacement? I would not mind replacing with a #11 cap holder. Pics attached.