You don't even need a bumpstock to auto-reset. Just need a belt loop.Skans » 24 Jun 2022, 9:05 am » wrote: ↑ That is actually an interesting guess. Technically, such a device (and there are such devices) would be called an "auto-reset", which would automatically reset the trigger after bumpfiring. But, no, this has nothing to do with bump stocks. It is a genuine, registered machine gun.