Since 1934, the National Firearms Act has limited ownership of "any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot, without manual reloading, by a single function of the trigger" (AKA, "machine guns"), but with the AutoGlove, a kind of exoskeletal automation system for your finger, you can get around the limits by having your roboticized hand squeeze the trigger so fast that you reach machine-gun-like rates of fire.
It's not clear whether AutoGlove passes ATF muster, but they're taking pre-orders on the strength of expert legal opinions.
The AutoGlove uses two mechanisms to rapidly pull a semi-automatic weapon's trigger. The Trigger Assist Device (TAD) that depresses the trigger is controlled by a separate button. It's attached to the shooter's right trigger finger. When the finger is fully extended, there's a bit of distance between the motorized trigger and the gun's trigger. The user then uses "micro trigger pulls" to engage the device.
"I think it'll be up to the ATF [to determine] the kind of semantic question about whether [the AutoGlove] falls within the definition of a single trigger pull," Ari Freilich, Staff Attorney for the Law Center to Prevent Gun Violence told Gizmodo. "If you press a button that automatically pulls a trigger, that button could be the trigger." For what it's worth, Josh Sugarmann tells us that "micro trigger pull" is not a technical or legal term.
This Trigger-Happy Glove Lets You Simulate Machine Gun Fire, But How Is It Legal?
(via Super Punch)