Deactivated Browning Auto 5 12 Gauge Shotgun in very good deactivated condition. Invented in 1898, with a production run that lasted a century, John Moses Browning said that the Auto 5 was his greatest invention! Considering his other designs, this is quite a statement. It was a favourite of the SAS and the Ghurkhas for jungle warfare in Malaysia and Borneo and is still in use by military and police forces the world over. A true classic. All deactivated weapons sold by D and B Militaria are deactivated in the United Kingdom and hold London or Birmingham proof marks and a certificate stating that the weapon has been deactivated correctly and is legal within the U.K.