My SR7 is shooting around 280 FPS with .25s ever since I swapped out the barrel to a KM Head
6.02mm 395mm TBB where before it was 320 FPS with .25s with the stock barrel. I believe the reason
for this decrease is because the Piston Head O-Ring is most likely worn out by now. I will be opening
my gearbox soon and while I'm in there, I will swap the O-Ring and re-grease all the parts. Since it is
open, I want to upgrade the spring and cylinder. On hand right now I have a KWA M130 spring but I am
contemplating whether I should order the Type 0.5 Cylinder found in SR10s, SR12s, etc. My main goal
is around 400 FPS with .25s. Will the cylinder be necessary or will the M130 spring do the trick?
Thank you for your help.
Edited by uriahskates, 01 April 2014 - 12:46 AM.