Patent attributes
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.
