A gun lock has a user manipulatable proximate end and a distal end for insertion into a barrel of a firearm. The distal end is spaced from the proximate end by a distance sufficient to allow the distal end to enter the chamber of the firearm when the proximate end is adjacent to but spaced from the barrel of the firearm. The distal end has elements which respond to user manipulation to transit from a first state allowing the distal end to enter and withdraw from the chamber of the firearm and a second state which prevents the distal end from withdrawing from the chamber. With the distal end of the gun lock inserted into the chamber and then transiting to the second state the inability to withdraw the gun lock from the firearm prevents the firearm from normal use.

A gun lock has a user manipulatable proximate end and a distal end for insertion into a barrel of a firearm. The distal end is spaced from the proximate end by a distance sufficient to allow the distal end to enter the chamber of the firearm when the proximate end is adjacent to but spaced from the barrel of the firearm. The distal end has elements which respond to user manipulation to transit from a first state allowing the distal end to enter and withdraw from the chamber of the firearm and a second state which prevents the distal end from withdrawing from the chamber. With the distal end of the gun lock inserted into the chamber and then transiting to the second state the inability to withdraw the gun lock from the firearm prevents the firearm from normal use.

A gun lock has a user manipulatable proximate end and a distal end for insertion into a barrel of a firearm. The distal end is spaced from the proximate end by a distance sufficient to allow the distal end to enter the chamber of the firearm when the proximate end is adjacent to but spaced from the barrel of the firearm. The distal end has elements which respond to user manipulation to transit from a first state allowing the distal end to enter and withdraw from the chamber of the firearm and a second state which prevents the distal end from withdrawing from the chamber. With the distal end of the gun lock inserted into the chamber and then transiting to the second state the inability to withdraw the gun lock from the firearm prevents the firearm from normal use.

A lock mechanism for engaging a hasp within a housing such that said hasp is lockably engagable within the housing, the mechanism comprising a processor, a power supply such as a battery cell, a memory, a transducer and an actuator, the transducer being operated by a dial such that the processor is designed to analyze the signals from the transducer and to send a signal to the actuator to engage and disengage the hasp when a signal comprising a sequence of forward and backward rotations, each consisting of chains of discrete clicks of the dial corresponds to a stored combination in the memory, and a method of use of same.

A biometric electro-mechanical locking system for a firearm includes a generally hollow main body having a pivot plate that is secured along the first end. A hand grip is positioned along the main body and configured to slide between a FIRE position where the trigger assembly of the firearm is accessible, and a SAFE position where the trigger assembly of the firearm is not accessible. A release button is positioned along the main body and is mechanically coupled to a dual locking assembly that is positioned within the main body. The dual locking assembly including an electromechanical locking unit having a processor, memory, fingerprint sensor and electric servo, and a mechanical locking unit having a mechanical combination lock.

A biometric electro-mechanical locking system for a firearm includes a generally hollow main body having a pivot plate that is secured along the first end. A hand grip is positioned along the main body and configured to slide between a FIRE position where the trigger assembly of the firearm is accessible, and a SAFE position where the trigger assembly of the firearm is not accessible. A release button is positioned along the main body and is mechanically coupled to a dual locking assembly that is positioned within the main body. The dual locking assembly including an electromechanical locking unit having a processor, memory, fingerprint sensor and electric servo, and a mechanical locking unit having a mechanical combination lock.

A method of assembling a lower receiver and an upper receiver of a firearm is disclosed. The method comprising steps of providing a threaded fastener; inserting the threaded fastener into a ratchet handle; mounting a ratchet gear into the ratchet handle, wherein the threaded fastener passes through an aperture of the ratchet handle and threads into the ratchet gear; positioning a locking plate at the lower receiver, wherein the locking plate is fixed to the ratchet handle by turning and tightening the ratchet handle with the engaged ratchet gear for locking to the locking plate in a locked position; and on the opposite side of the lower receiver, inserting a threaded pivot pin into an aperture of the locking plate from the opposite side of the lower receiver, wherein a threaded rod of the ratchet gear is threaded into a threading cavity of the pivot pin.

A method of assembling a lower receiver and an upper receiver of a firearm is disclosed. The method comprising steps of providing a threaded fastener; inserting the threaded fastener into a ratchet handle; mounting a ratchet gear into the ratchet handle, wherein the threaded fastener passes through an aperture of the ratchet handle and threads into the ratchet gear; positioning a locking plate at the lower receiver, wherein the locking plate is fixed to the ratchet handle by turning and tightening the ratchet handle with the engaged ratchet gear for locking to the locking plate in a locked position; and on the opposite side of the lower receiver, inserting a threaded pivot pin into an aperture of the locking plate from the opposite side of the lower receiver, wherein a threaded rod of the ratchet gear is threaded into a threading cavity of the pivot pin.

An interlock mechanism for a firearm that includes a stop lever and a cam lever is disclosed. The stop lever is coupled to a firearm safety mechanism such that when the safety mechanism is in a fire position the stop lever prevents the upper receiver of the rifle from being separated from the lower receiver of the rifle and when the safety mechanism is in a safe position the stop lever allows the upper receiver to be separated from the lower receiver. The cam lever has a locked position in which the upper receiver cannot be separated from the lower receiver and an unlocked position in which the upper receiver can be separated from the lower receiver. When the safety mechanism is in the fire position the stop lever prevents the cam lever from transitioning from the locked position to the unlocked position.

The techniques described herein relate to methods and apparatus for firearm safety mechanisms, visual safety indicators, and related techniques. A firearm includes a handle comprising one or more buttons disposed at least partially within a surface of the handle, such that the one or more buttons can be in contact with an operator's hand when the operator grasps the handle; a safety mechanism in mechanical communication with the trigger. The safety mechanism comprises: a first position that blocks actuation of the trigger; and a second position that does not block actuation of the trigger; and at least one processor configured to: upon determining an input code matches a stored code, transmits a signal to the safety mechanism to change the safety mechanism from the first position to the second position so that the firearm can be fired by the operator.