10 years ago, the majority of us just bought our AEGs directly from Japanese or Chinese retailers. Shipping sucked, the average price of an AEG was $300. But we still bought them. Laws like this will put United States retailers out of business. If Redwolf Airsoft or WGC have realistic looking AEGs in stock, guess what, we'll buy from them. They cannot stop us from ordering AEGs overseas and they cannot check every box at customs. They don't have the resources or the time.
California wants to put their people out of business - unknowingly outsourcing AEG retailing overseas. Sure, a retailer from Oregon might refuse to send an AEG without the proper markings to California. But what about a Chinese retailer? They don't care. The majority of them don't understand how to properly educate kids in the US about how to be safe with their AEGs because they can't own real guns.
You would think the firearms companies and distributors would be outraged about this as well. They spent lots of money and tossed lots of lawyers around to enforce their trademarks and licenses. Some of them even made specific product lines just for Airsoft distribution in the US. Big money talks. This law would bring Airsoft back underground, who gives a shit if a product is licensed or not when you are buying from China. Nobody will want the brightly colored AEGs. If I worked for an of the major US distributors, I would be worried right now.