>>27721430CA does has vague law; definition of what constitutes a blocked magazine for instance. The definition of a fixed magazine, however, is not vague and the requirement to turn a fix magazine firearm into an AW is not.
And no one on calguns tell people to ignore the magazine limit requirement. You are either confusing the issue with other magazine related laws that are vauge, or you are just making shit up based on your misunderstand of the laws.
Police do enforce AWB laws, even if they might not enforce magazine laws on their own (standard cap, blocked mags, whatever). The Richards cases that started becuase of unlawful AW arrest (arrested for AWB despite the rifle being legal) even resulting in the courts ruling that the AW laws are not unconstitutionally vague. It's a shit law, but it's law that has been held up in the courts.
Again, if you want to break the law, go ahead. I'm not one to stop people if they want to take the risk. Just don't even think you're being legally clever and what you're doing is some loop hole that no one else has ever thought of before.
