Smart Team International have posted photos of their S&T ST-AEG-11 M3A1 "Grease Gun" AEG though no details yet about  its release date. If you are wondering why the use of a Japanese school girl it is because it is made to coincide with the release of the "Sailor Suit and Machine Gun: Graduation" which is a sequel of "Sailor Suit and Machine Gun", a story of a Yakuza leader who is a delinquent school girl and uses a Grease Gun to kill rivals. The sequel got released last 5 March 2015.