Its just a loophole someone found in a cali law that let's you use ars there. The law basically says that you must require a "tool" to remove a magazine from a gun. This basically just prevents you from manipulating the release without the aid of a "tool", in this case a bullet thet depresses a smaller mag catch that a finger can't get to.
This is my ar, and visibly the only difference is the back of the pistol grip. To me, it's the better option, but I guess fellow commiefornians want the easy way out.
Are you kidding me?!? Wow, I feel so bad for you guys in Cali...that has to be among the most ridiculous things I've ever seen!
__________________ "Life's tough. It's tougher if you're stupid." -- John Wayne