videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including PULSE RIFLE M41-A, How to make an Ammo Belt RPD軽機関銃 100RD Drum Magazine, 12丁のミニガン minigun-meeting CAW M134