AirSix TV reviews the Tokyo Marui Auto BB Loader, which they highly recommend for its convenience and quick reloading capabilities. The loader is designed to look like a miniature ammunition box, can hold up to 1,600 BBs, and is powered by four AA batteries. It is compatible with many Marui and third-party magazines, including those for gas handguns and rifles. They note that while the internal gear is plastic, it is durable. The only minor inconvenience mentioned is that the handle cannot be closed with the GBB tip attached.