Patent ID: 7222450
Filing Date: 2007-05-29
Classification: F41A

Abstract:
1. A firearm magazine block to prevent unauthorized loading of a firearm having removable magazine feed, and which can be retrofitted to existing weapons without said weapons requiring any modification, the magazine block comprising: a magazine or a substantially magazine shaped body dimensioned to fit into a magazine housing of a firearm; an electrically-operated lock supported by said body and retaining said body in said magazine housing, said lock being operatively connected to at least one normally-extended sliding dead bolt projecting into a recess in said firearm when said lock is not powered, thereby preventing removal of said body from said firearm while allowing removal thereof when said lock is powered to retract said deadbolt; a power supply; means for inputting biometric data; a memory for storing biometric data of at least one authorized user; means for comparing newly received data with data stored in said memory; and means for operating said lock to retract said deadbolt, said body having an end projection entering a space preventing a cartridge from occupying a position required for loading or firing a single cartridge, said lock being operated by a signal from a biometric identity verifier if said new biometric data matches said stored data, and retaining said block in said firearm when no match is found.