You cannot remove or alter identification markings on certain arms items without a good reason. If you do, you might break the law. You could go to prison for up to 3 years if you are found guilty. You can remove identification markings if you have a lawful and proper purpose. In this case, you must re-mark the arms item according to the rules in this Act and any regulations. This ensures the arms item still has the required identification markings. If you remove an identification marking, you must follow the rules to re-mark the item. This is to ensure the item still has the correct markings as required by law. You must do this even if you had a good reason to remove the original marking.