Spring Compatibility S&T Type 38

[Moebetes]

Hi All!

Im wanting todrop the FPS of my Type38 to 300FPS from the 380 out of the box.

Absolutely no ideas when it comes to compatibility with this stuff as I've refused anything other than gas guns for the past 6 years.

What would work to reduce the FPS?

S&T have blanked my email on the Japanese Markets' spring, as I assume that its below their limits to be sold over there.

Cheers!