People overestimate the complexity of guns. Take bronze age metallurgy culture and add black powder and the idea of putting a bronze bullet in a bronze tube with that powder, and you have muskets super early.
That would be honestly fucking crazy and an interesting alternate history, Romans failing to conquer an early musket Carthage
You could fairly easily build a single working gun analogue, it just wouldn’t be even close to the guns of today.
Though the difficulty, would vary greatly depending on the components you have to hand in the time-period you landed
The mechanism of a shotgun or musket is relatively simple.
Granted , the black powder chemistry is a bit tricky and requires intermediate chemistry steps AFAIK.
If you needed to do metallurgy from scratch that would increase the estimation by a lot.
People overestimate the complexity of guns. Take bronze age metallurgy culture and add black powder and the idea of putting a bronze bullet in a bronze tube with that powder, and you have muskets super early.
That would be honestly fucking crazy and an interesting alternate history, Romans failing to conquer an early musket Carthage