Forgotten Weapons
It also has a
companion YouTube Channel
Although most of the weapons covered aren't going to show up in a T2K campaign, the videos are fascinating to watch for the history and different technical approaches in firearms development.
Most featured weapons are in auction houses, so the host is obliged to give a bit of promotion in return for getting to play with the gun, but it's nothing excessive.
As an example, here is a Brazilian SMG from the 1980's:
https://www.forgottenweapons.com/the...in-simplicity/
And here is a custom combination gun from before WWI:
https://www.forgottenweapons.com/a-u...mbination-gun/