Abstract: An apparatus for controlling a trigger mechanism of a weapon includes a locking device configured to disable the trigger mechanism in an engaged state and a lock controller. The lock controller includes a location sensor, a processing device, and a memory device. The memory device stores one or more fire control rules and instructions executable by the processing device to determine whether to disengage the locking device to enable the trigger mechanism based on the one or more fire control rules, data from the location sensor, and a type of the weapon.