Birdshead Grip (Shockwave style) Shotguns
This dude's got some interesting points about this style of shotgun, and I definitely have a different outlook on them now. So much so that if I WERE to get a shotgun, I might set it up in this same manner.
Some of his stuff may seem a bit weird at first and it's definitely a little unorthodox. But he's a smart dude, and from what I hear, what they call a "mutant freak of a shooter".
Take a look at some of his other videos as well, he can run that thing like a son of a bitch.
It's definitely interesting, but it seems to fly in the face of regular shooting. I guess I haven't looked into shotgun at all, but he's basically talking about flinching it seems? Push the gun out right before you shoot, Which I feel like would lead to pulling your shots. But then again, I haven't looked into shotgun at all.
I also ran across another video of his, linked below. The video quality is horrible, but he talks about AR pistol shooting with no brace or anything.
Seems interesting, it seems to me that your just trading maneuverability for stability. Looks like he has put in enough hours to dial the thing in and is definitely quick with it. I probably won't be trying it but always glad to see new methods