GUN-LOK is a security device that effectively addresses the above risks by internally locking the breech of a 12G shotgun therefore preventing the insertion of an ammunition round. GUN-LOK has a profile similar to that of a typical cartridge and is quick and easy to fit. Its in-built ‘fail-safe’ anti-tamper provisions make GUN-LOK highly resistant to attack or unauthorised removal. In addition, due to its low profile, GUN-LOK allows shotguns and separate barrels to be normally stored and transported. GUN-LOK is simply inserted into the shotgun breech in the same way as a cartridge and with a few key turns of the integral multi-pin lock, the shotgun breech is effectively inaccessible. GUN-LOK has been especially designed to actively resist force and to be ‘fail-safe’. Any determined attempt to remove GUN-LOK by force, including attempts to remove by drilling, will result in progressively tighter locking and possible permanent blocking of the shotgun breech.

Once outside the protection of the home, a shotgun is more vulnerable to opportunistic, accidental or unlawful acquisition. Transit to and from clubs, shows or organised shoots, carries many vulnerability risks. Also, gun-dealers, demonstrators and retailers regularly attend shows and exhibitions - necessarily involving the transport and display of multiple and minimally secured weapons.