SAFETY MECHANISM FOR FIREARMS

A discharge blocking device is compatible with a firearm having a magazine housing and a trigger bar. The trigger bar has a range of motion between a forward released position and a rearward discharge position. The discharge blocking device comprises a cover configured to be removably received in the magazine housing; a locking mechanism connected to the cover; and a rotating locking element connected to the locking mechanism and having a rotating projection configured to at least partially rotate between a locked state and an unlocked state. The rotating projection is configured to prevent movement of the trigger bar to the reward discharge position and prevent extraction of the discharge blocking device from the magazine housing when in the locked state; and enable movement of the trigger bar to the reward discharge position and enable extraction of the discharge blocking device from the magazine housing when in the unlocked state.