Welcome to the forum Mr. Bill. As I understand the Federal Laws, you are ok, and as I understand The messed-up-everchanging Calif. laws you are ok except for the mags as you had your gun fixed up to its current configuration before the 1994 ban. Your muzzle brake is a John Mason double muzzle brake, also known as a Blackwarrior double muzzle brake, not a flash hider.
This being said My papa used to say, "If you don't know your rights, then you don't have any! If I were you are anyone else, you need to study your own states rights, and not rely on what someone else tells you. Since you already have a copy here is a couple more helpful links.
http://www.sportables.com/ruger_rifles.htm
Federal Laws:
http://www.the-top.com/krink/assault_weapons_ban.htm
If you have a gun made before September 14, 1994 (pre-ban), you are able to have as many of the dangers on it as you would like legally. The caveat is that the gun has to have been in an "assault weapon" configuration on or before the ban took place.
This being said My papa used to say, "If you don't know your rights, then you don't have any! If I were you are anyone else, you need to study your own states rights, and not rely on what someone else tells you. Since you already have a copy here is a couple more helpful links.
http://www.sportables.com/ruger_rifles.htm
Federal Laws:
http://www.the-top.com/krink/assault_weapons_ban.htm
If you have a gun made before September 14, 1994 (pre-ban), you are able to have as many of the dangers on it as you would like legally. The caveat is that the gun has to have been in an "assault weapon" configuration on or before the ban took place.
