Patent ID: 7121033

Claim:
A firearm barrel lock for preventing unauthorized or accidental discharge of a firearm having a barrel and a cartridge chamber, the barrel lock comprising: a dummy cartridge including a longitudinal slot that extends from a forward end thereof and terminating approximate a reward end at two opposed forward turned notches, said dummy cartridge is receivable by a cartridge chamber of a firearm and being of a dimension to correspond with a round of ammunition for the firearm; a shaft having first and second ends, the first end being diametrically reduced from the second end so as to define an abutment, the first end being T-shaped and removably insertable through a barrel of a the firearm into the longitudinal slot of said dummy cartridge and is engagable with the two opposed forward turned notches to prevent withdrawal of said shaft from said dummy cartridge, and the second end terminating beyond the end of the barrel; a spring positioned about the diametrically reduced first end of said shaft intermediate the T-shaped end and the abutment, said spring contactable with a forward face of said dummy cartridge and being compressed between the forward end of said dummy cartridge and the abutment when said shaft is inserted into the longitudinal slot, thereby urging said shaft in a direction outward of the longitudinal slot; and a lock being releasably secured to the second end to prevent the disengagement of the T-shaped end from the two opposed forward turned notches, said lock being a dimension preventing said lock from entering the barrel.