From Mean Arms:
Our new MA-Loader is a California compliant, 10-round bullet loading device that will allow you to safely and efficiently reload your fixed magazine without the need to break down the firearm. Simply place the MA-Loader into your AR-15’s ejector port and press the thumb-ring slider to quickly load or reload. It is that simple!**
The MA-Loader is also available in several different kits with our Feed Ramps and/or MA-Lock.
The best part is, using an MA-Loader with a fixed magazine (we also offer our MA-Lock to turn your existing bullet button into a fixed mag rifle) eliminates the requirement of registering your rifle with the State of California. If moving out of the state of California is not in your plans, lawful gun owners can still enjoy the use of their AR-15s with minimal disruptions while fully complying with the new laws.
Learn more here: www.meanarms.com/ma-loader-for-ar15