101Tech, the official distributor PolarStar Airsoft products announce the new PolarStar F2 Version 3 Engine... " We are happy to announce that the much antisipated F2™ V3 Conversion Kit is now available and ready for order. The kit comes with the new F2V3 Switchboard and the #2 nozzle which supports most AK models such as those made by G&G, Tokyo Marui and clones such as CYMA.