Angry Gun was very well known for designing a silencer made specifically for the MP7 GBB SMG but they're back with another kind of silencer. This particular version has an Acetech AT2000 tracer module inside. This silencer for Tokyo Marui MP7 is somewhat special, because aside from being a flash hider, flashes every time it senses a tracer BB is shot through and stays illuminated for the duration of its travel.
The tracer itself: