cell phone pistol reminds me of my design from a few years back. doesn't look like it for the most part, but it's simple and such. self defense situation at least. something I'd want myself so I can just put it in my pocket and go like a cell phone. --- reminds me of the AA-12 (grenade launcher rounds) - pretty sure that was fully automatic, but it might of been semi only. Can't remember. This is the AA-12 with regular flying shotgun rounds (the media doesn't want you to know about). He's loading it as he's shooting it. https://www.youtube.com/watch?v=xxiIWETpmi0 --- it's fully automatic I want to say. maybe first commercially available (fully automatic) grenade launcher. https://www.youtube.com/watch?v=xNPGvPa9NeQ --- OPs video is clickbait for the most part to me personally (jewtube). --- fully automatic grenade launcher (grenade launcher round)... I can't find one with the grenade launcher round though. Figure these shotgun rounds (green) work just the same as the (green) grenade launcher rounds though and it's completely fully automatic. Just not available commercially to the public though is probably what that means I want to say. https://www.youtube.com/watch?v=FJR2PNzRyDg --- wonder if there's a term or if this is true. fully automatic grenade launcher firing 8 projectiles (rounds) that walk back and/or explode back at the person shooting said fully automatic grenade launcher. chain effect of grenades blowing back in reverse as the first one in front of it explodes. not sure though. seen it in video games a few years ago, but not sure if that works in the real world. fully automatic has never been that great though to as well so it wouldn't surprise me. single shot or burst shot was always the best way to go for accuracy from what I've seen over the years anyways myself.