Helppp~~

[b16bvtec]

HI I have TM PSG1 with Systema 300% upgrade kit.
but after install of the kit I am getting around 350 ish fps on .2 bb

This is the second time I install and reinstall 2 different 300% systema upgrade kit for PSG1.

Does anyone know why is it getting so low of the fps.

The psg1 is fully mod from the tip to the gearbox. the only thing that is still oem is the motor could that be the reason ?

[Amos]

Motor doesn't affect FPS.

What direction did you put the spring in?

Did you test compression?

[mr_nuts31]

check the airseal for leaks, that might be the case

[wildcard]

190% or more you need a bore up kit also at anytime you have an extended inner barrel a bore up kit is recommended, My M82A1 have a custom 780mm Inner barrel with a bore up kit, M150 spring it's shooting 395-400fps with .25 back to the original 650mm barrel it's shooting around 450-467 fps with.25.

the main reason could be that your aeg comes with the 650mm barrel, try getting the Bore up cylinder or better yet get a FTK kit for the PSG1 it will come with everything you need, Both My PSG1/MSG90 have the Systema FTK kit with PDI 280% installed and both of them are shooting 420-428fps with .25 consistently

[b16bvtec]

I am sorry but what a FTK? Is that the system full tune up kit ? If yes that's what I have already...