normally feild games are capped at 400 for AEGs (outdoors) and 350 for indoors. Honestly 300 fps isn't low for indoors, its standard where as 350 is high for indoors. It will cost you $110 to get a 400 fps upper ICS gearbox (plus tax) and this would give you the best of both worlds.
etd/Carmelo - Team North Bay
v3 Aeg specialist