The first open source rifles were doubtlessly the flintlocks (or perhaps matchlocks, but probably not wheel locks.) There were a few lock designs throughout hi

The first open source rifles were doubtlessly the flintlocks (or perhaps matchlocks, but probably not wheel locks.) There were a few lock designs throughout history, but it was near enough to an industrial standard that could be produced by anybody who had the skill and startup funds. Locks were typically made by specialists, then bought in bulk by other gunsmiths who built the rest of the rifle to go with the lock.