A device for assisting in the chambering of a handgun that can also serve as a safety device for preventing unwanted firing of the handgun is disclosed. The device comprises a slide pull that includes an elongate laterally flexible structure having a first end configured for being releasably coupled to a first side of a slide of a handgun and a second end configured for being releasably coupled to a second side of the slide. A trigger restraint is coupled to the slide pull near a mid-portion thereof. In a first position, the slide pull is configured for being grasped by a user in order to chamber a bullet. In a second position, the trigger restraint is positioned relative to the trigger to prevent movement of the trigger that would otherwise cause the weapon to fire.