Here's what needs to be done to the Indian gun industry. Send someone over there with original guns that they are making and use them for the actual patterns, or at least TRS copies. Get some decent wood somewhere. Make some work benches for these guys to work on so they don't have to sit in the dirt anymore. Measure the original barrel every couple inches and make the barrels exactly the same. Make the locks from actual pattern pieces and have some sort of quality control. These guys should be able to reproduce 18th century quality levels. Show them how to sharpen a chisel. Make sure the stockers use patterns from original guns, Not bad pictures of the guns.
From what I have observed, the guys making these things either don't know or don't care what they are doing, probably a combination of both.
There is incredible potential there, they just need a foreman that knows how to make guns to run the outfit.