Strict rules apply to which FPS force you can shoot in the Netherlands and Belgium. Avoid disappointments and make sure you check your FPS after airsoft device modifications so you can safely play at any airsoft event.
good to know about FPS
An airsoft replica should always be measured with the hop up room fully open and with 0.20 Gr Bio airsoft BB's. This is the only way to get a correct measurement. when you play skirms your airsoft replica is allowed to shoot up to 360 FPS (semi & full auto) and 450 FPS if you have a DMR with 2 sec delay (single only). Snipers with bolt action may shoot 500 FPS.