This stuff goes on all over the world. Handmade guns are the province of the super-rich in the industrialized world. In the poorest parts, they are the province of the not-so-poor.
right - the locals in the Khyber Pass and Afghanistan have copied British and then Soviet guns- i remember an article back in the days the Russians were there where a guy made so close a copy that he even reproduced the serial number -
There are working 1911's brought home as souvenirs that were made by the Viet Cong with hand tools
The British supplied the plans for the STEN to the resistance so they could be made in bicycle shops
i am sure some blacksmith in an area ruled by Rome 2000 years ago made copies of the gladius