CYMA has an airsoft version of the KAC SR-47 rifle, allowing you to use AK-style AEG magazines with an AR platform. The CYMA CM650B is an affordable AEG that comes a built MOSFET which AEGs nowadays are coming out with as standard. L'Antre du Dingo got a unit to look at for this video review... "Let's have a look at the new Cyma 650B, this low-budget gun is fitted with a MOSFET."