causes so many people to have a fit, just look at the past:
In 1996, the FTB examined and classified a 14-inch long shoestring with a
loop at each end. The string was attached to the cocking handle of a
semiautomatic rifle and was looped around the trigger and attached to
the shooter’s finger. The device caused the weapon to fire repeatedly
until finger pressure was released from the string. Because this item
was designed and intended to convert a semiautomatic rifle into a
machinegun, BATFE determined that it was a machinegun as defined in 26
U.S.C. § 5845(b).
Yes, the BATFE classified a SHOESTRING as a machinegun.
So we remember things like that, and the thought of a bunch of gun bigots passing 'common-sense gun safety laws' gives us shivers.