Tanaka Works have released a “Ryo Saeba” (aka City Hunter) licensed 4 inch heavyweight S&W Colt Python that uses their Pegasus gas system. This system does not use shells, takes green gas and hides a mini magazine and gas reservoir in the cylinder. You can grab this piece over at places like Impulse 101, RedWolf Airsoft and WGC Shop priced at around 380USD or so.
