Anybody can bump-fire any semiauto long gun with more recoil than a 22LR with just a bit of practice: no bump stock, just a finger.

But it’s a silly practice—just a pointless waste of ammunition.

"But whether the Constitution really be one thing, or another, this much is certain--that it has either authorized such a government as we have had, or has been powerless to prevent it. In either case, it is unfit to exist." --Lysander Spooner, 1867