It is indeed an Indian made lock. For $60 delivered it hardly seemed worth making my own. The lock will go with a flint lock on the same size lock plate and be interchangeable. Matchlocks of this period were often updated by swapping locks over, the pan being part of the lock and not the barrel. The pan is not designed to swivel but to remain in place when the screw is tightened fully to fix it into the fore end notch. It is a manufacturing feature letting one make the pan, complete with cover and fence, separately and then fit to the lock plate. No lock nail holes are made as yet. The end product will be much as Mike has posted above and the stock painted black as was normal then. These things eat powder at 7.5 grams per bang. I get only 65 bangs from a 500g bottle which makes powder just over 0.50 euros a bang with postage.