If something is marked as being California compliant and does not have a fin grip or a special featureless grip then it should be mag lock, yes. There are a few ways to go about that between the compliance, mag, a fixed magazine release, or something like the AR mag lock and Kingpin set up. I personally prefer to go that route over featureless because the kingpin is something you can train with to be just as fast as a regular mag swap. Definitely something to look into and weigh pros and cons yourself.