Not every place/event uses the certification system, just check the field rules before you go. Note that a higher FPS is not utterly critical in sniping: you'll accomplish a lot more shooting <450 with good ammo and an upgraded barrel/hop up than you can with a stock gun shooting ~500.
Edit: Shelledpants answered much more comprehensively than I did, listen to him.
Airsoft is where expensive things go to die.
Last edited by Bellerophon; March 11th, 2013 at 18:18..