Gun safety device

A device for controlling access to a firearm having a barrel with one or more features that are proximal to a muzzle of the firearm, the device comprising:

• a lock housing with a base component coupled to a receptacle component, wherein the receptacle component includes a cavity configured for insertion therein of at least a portion of the barrel;
• a key structure coupled to the base component of the lock housing, wherein the key structure is arranged to receive a key;
• a lock mechanism coupled to the key structure and arranged for actuation by the key;
• a lock mechanism shaft coupled to the lock mechanism and configured for rotational movement upon actuation of the lock mechanism;
• a cam having a distal end and a proximal end, wherein the distal end of the cam is in contact with the lock mechanism shaft such that rotational movement of the lock mechanism shaft causes axial movement of the cam;
• a bidirectional rotatable shaft coupled to the proximal end of the cam and arranged for insertion into the barrel;
• a plurality of extended arms coupled to a perimeter of the cam and arranged for pivotal and radial movement to secure at least a portion of the barrel in the cavity of the lock housing;
• and
• a plurality of tabs arranged on the plurality of extended arms for engagement with an exterior surface of the firearm to retain the muzzle within the lock housing,
• wherein the plurality of tabs includes one or more top tabs arranged to secure any blade-like front sight or bead of the firearm and two or more side tabs arranged to occupy serrations on a slide or a frame of the firearm.