Patent ID: 9182186
Filing Date: 2015-11-10
Classification: F41A

Abstract:
1. A button lock for a threaded, depressible magazine release button bolt of a lower portion of a firearm, the firearm also having a selectively removable upper portion, the button lock comprising: a body having a top surface, a bottom surface, and at least one peripheral edge, the body including a main aperture traversing the top surface and a smaller button bolt aperture adapted for slidably receiving the button bolt, a retaining lip defined between the main aperture and the bottom surface, the body including at the top surface thereof a laterally-projecting extension terminating at a downwardly-projecting lip; a screw insert slidably retained within the main aperture and having a threaded bore adapted for receiving the button bolt through a lower end thereof, the screw insert further including at a top end at least one tool notch, the screw insert larger than the button bolt aperture and prevented from exiting the body therethrough; whereby with the button bolt engaged with the screw insert through the button bolt aperture of the body through rotating the screw insert at the at least one tool notch to engaged the threads of the screw insert with the threads of the button bolt, and with the laterally projecting extension positioned over both the lower and upper portions of the firearm, the downwardly-projecting lip prevents the button bolt from being depressed when contacting the upper portion of the firearm, but when the upper portion of the firearm is removed from the lower portion the downwardly-projecting lip clears the lower portion to allow depressing of the button bolt.