Bump stock devices that turn semi-automatic firearms into fully automatic weapons are now banned in Massachusetts.
The law banning the devices was passed last fall by the state legislature, and took effect yesterday.
In Chicopee, spokesman Officer Mike Wilk says four people have brought bump stocks into the police station.
In Springfield, spokesman Ryan Walsh says they have not had anyone come in with the devices.
The measure was proposed after the man responsible for a mass shooting last year in Las Vegas used the devices to shoot hundreds of people, killing over 50.
The ban was included in a supplemental budget bill that was signed by Governor Charlie Baker in November.
The confiscated bump stocks are being stored at police departments until lawmakers figure out what will be done with them.
(Massachusetts State Police picture)