If you have inherited weapons and/or ammunition that require a permit, do not have a gun ownership card and cannot prove a need to possess the inherited weapons, you must render the inherited weapons unusable or have them fitted with a state-of-the-art blocking system. Ammunition requiring a permit must be rendered unusable or given to an authorized person.

The blocking system must be installed by a recognized gun dealer or gunsmith. They will also issue you with proof of installation. The Physikalisch-technische Bundesanstalt (PTB) in Braunschweig tests the conformity and approves newly developed blocking systems in accordance with the Technical Directive - Blocking Systems for Inherited Weapons. Further information, including the current status of the blocking systems available on the market, can be found on the website of the Physikalisch-Technische Bundesanstalt (PTB) under "Further information"

If there is no state-of-the-art blocking system on the market for one or more inherited weapons, you can apply for an exemption from the obligation to secure all inherited weapons with a state-of-the-art blocking system.