Birmingham Mayor wants a ban on dangerous gun conversion devices.
A mass shooting killed 4 and injured 18 in Birmingham's entertainment area.
Mayor Woodfin says Glock switches shouldn't be on our streets.
Police are searching for suspects after the deadly shooting.
Witnesses heard gunfire that sounded like it came from an automatic weapon.
Glock switches turn semi-automatic guns into fully automatic weapons.
Alabama law doesn't ban gun switches, but Mayor Woodfin calls for action.
Woodfin suggests tougher penalties for using gun conversion devices.
Some state lawmakers are against banning switches, saying federal law is enough.
Mississippi made gun switches illegal after a tragic shooting.