The Alabama House of Representatives passed a bill Thursday that would require anyone above the age of 18 who causes the death of another person using a machine gun to be sentenced to life imprisonment without the possibility of parole.

The bill, SB32, defines machinegun as “any firearm that shoots, is designed to shoot, or can be readily restored to shoot, more than one shot automatically without manual reloading and by a single function of the trigger,” according to its text.

The legal penalties would also apply to deaths caused by any part or combination of parts intended solely for use in converting a firearm into a machinegun, such as a Glock switch.

The bill, brought forth by Sen. Rodger Smitherman, D-Birmingham, passed with an amendment from Sen. Chris Elliott, R-Josephine, which narrows down its language to apply only to parts and devices that enable firearms to fire more than two shots, without manual reloading, by a single function of the trigger.

If the defendant was below the age of 18 at the time of the offense, they could also be sentenced to life imprisonment with a possibility of parole, per the bill’s text.

SB32 is one of three firearm related bills Smitherman filed this session in response to the Sept. 21 mass shooting at Birmingham’s Hush Lounge, which killed four and left 17 injured.

“We’ve got to be aggressive,” he told AL.com previously.

“If that’s necessary, we’ve got to do that. People who are caught carrying those guns, we’ve got to be aggressive in getting them and those guns off the streets.”

The bill now moves over to the House.