KA m4 stock spring rate?

[Scrivah]

Hey guys. When I first got my m4 it was only chronoing at 300fps with .20's. A buddy of mine ripped it open to find the piston o-ring seal wasnt creating the seal it should. He fixed that problem and the compression is up another 70fps so I am now getting 370fps with .20s.

Assuming this was the only issue and all is right in the world what spring do you figure comes stock with this King Arms M4? I am thinking its a M110. Would this seem right?

The box says it gets much more fps but everyone has had different experiences. I really only need it at 400fps max as this is usually the limit so I am not too worries that its at the 370. Jusy curious if you all know the stock spring value.

Thanks

[lurkingknight]

if it's sealing perfectly it's that's the upper end of what a 100 does and the lower end of what a 110 does when it's leaking though it depends on the maker of the spring. a guarder sp110 shoots 390-410 for example. And in the case of my m14... 420 :P

I think we had a shs 110 put into a teammate's ka m4 and it's at 380~