Abstract: A firearm locking system that can lock a trigger by remote activation by an authorized user using a trigger lock that can block a trigger of a firearm from being pulled sufficiently to fire the firearm, The trigger lock can be advanced forward into the locked configuration and retracted into an unlocked configuration with the use of an actuator, such as a motor, Tamper-resistant features can be employed to prevent unauthorized users from disabling the firearm locking system. For example, when the trigger lock blocks the trigger, the trigger lock can also lock the upper receiver from being removed preventing access to the firearm locking system from the top of the firearm. The actuator or can be detachably connected to the trigger lock such that when the grip is removed, the actuator disconnects from the trigger lock causing the trigger lock to enter a jammed configuration.