KWA AEG 3 Ronin TK.45TK. 45 TEKKEN AEG 3 THE NEXT EVOLUTION OF KWA AEGS The ultimate addition to the Ronin AEG lineup is here! The Tekken TK. 45 Series is available as either the field ready TK. 45 AEG 3 carbine with a slender aluminum 10 inch M LOK free float rail and KWAs Kinetic Feedback System (KFS), or as the TK. 45c AEG 2. 5, with KWAs Variable Performance System (VPS) unit, which allows a quick and simple FPS adjustment. Both models feature quick change spring