semi auto pistol development history

it's mostly videos i sent to friends on messenger, thought i'd wrap them up in a big ball and upload it, in case someone finds it interesting
don't worry, i have actual """content""" planned too, well, i have 3 gun prototypes on my desk, 2 more i didn't count, 2 cars, a chassis? instructions for the butterfly knife, and a poseable human figurine are all coming, sometime, in the... the future... at some point.......