As a recent arrival on the airgunning scene in SA I'm somewhat unclear about the law relating to airgun ownership in this country. As I understand it, I could own any air rifle in .177 (4.5mm) calibre, with no restrictions placed on power or energy in terms of joules or foot pounds measured at the muzzle. As I understand it a firearms licence or permit is required for any air rifle of .22 (5.5mm) calibre and above. But what about air rifles in .20 (5.0mm) calibre? Is a permit required, or not required? I would welcome comments/answers re the above from those in the know. Lastly, is there any restriction placed on buying a sound moderator for use on an air rifle?