Taking down the fps new spring or just cutting it?

[AirsoftgoesAli]

I've got an ASG Aug coming in with an FPS of 394 will I have to cut the spring and if so how much to bring to 350? Or will I have to buy a new spring and if so what kind and where should I buy it from?

Thank you

 

[Bloodless2010]

I know you can cut off pieces of the spring to reduce the fps, but that seems like a big difference, I would recommend checking out this spring chart for a rough estimate of the FPS, http://www.airsoftcanada.com/SpringChart.php

But personally, I'd suggest getting the gun chrono'd first, a friend of mine has a gun that was listed as 330, 'tested' at 350 before being dispatched, and then came in at 390 on the field!

 

[PT247]

I'd get a new spring rather than try and drop 50fps by chopping that one..... or lock it to semi until the spring softens!

 

[Sitting Duck]

http://www.airsoft-forums.co.uk/index.php/topic/30203-hot-cqb-aeg/#entry233854

M100 ish but there are reasons or variables why you may get a smidge more/less than 328fps