Modular KWA Kriss Vector Drum Kit V3Improved lead time of around 1 week or less! Our magazine conversion for your KWA Kriss Vector GBB (AEG magazines, replica, and other accessories not included). Improvements with Version 3 of our Modular Adapter System include the following: Higher average FPS compared to previous versions Increased gas HPA efficiency compared to previous versions Each adapter is engraved with a unique serial number Can be converted to use Green Gas. 1 4" macro line