A favourite AEG for P90 fans is the Tokyo Marui P90 TR. This has the triple rail to allow you to mount weapons accessories such as aimiing devices. It comes equipped with the full metal SOCOM silencer as well as the original flash hider in case you want to remove the silencer. The transparent magazine comes with dummy rounds to make it look more realistic. MiR Tactical show their setup of this AEG in this video.