Weapons: firearms; certain provisions regarding weapons; repeal. Amends secs. 231 & 237a of 1931 PA 328 (MCL 750.231 & 750.237a) & repeals secs. 227, 227a, 227c, 227d, 231a & 234d of 1931 PA 328 (MCL 750.227 et seq.).

SB 406 updates Michigan's firearm exemption rules by amending sections 231 and 237a of the penal code and repealing outdated provisions. It adds a training requirement for certain exemptions in section 231 (e.g., corrections employees must complete weapon use training) and clarifies school zone exemptions in section 237a. The bill specifically allows security personnel, licensed carry holders, and hunters transporting firearms under defined conditions (e.g., unloaded in a trunk for hunting trips) to carry weapons on school property without penalty. It directly affects law enforcement, corrections staff, security contractors, and hunters who transport firearms for permitted activities. The changes aim to modernize exemptions while maintaining school safety protections.