JungleJug

I'll let you know how things go. I changed out the 130 spring I had for a 120 SHS which was to hand. Strangely it went up to 380, so careful about the quality of your spring. I'm sure an M130 SHS will push it to 400+ Thanks a lot, I'll certainly contemplate that. I'm on the hunt for a new spring so when I find I'll get the tech to do some tests

Any feedback after installing the nozzle JoyFull? Having teh same problem after many upgrades. Out of the box CYMA M14 (long) (with M120 spring) - 348 fps - Inner barrel 500mm 6.03 - Modify Hybrid - Bucking - Modify - Cylinder head - ASG Ultimate - Air nozzle - Guarder (later changed for metal one with O-ring SHS to guarantee seel) - Conical piston head (silencioso) - SHS/Rocket - PIston with 15 metal teeth - SHS/Rocket - Metal spring guide with bearing - ASG Ultimate --Shimming Bought new Guarder gears but one of the gears has a slightly larger diameter therefore not installed. AFter 373 fps (headache) MY tech went over everything three times to check. Installed new M130 Spring (No change to fps) Need help, as scratching head on this one. Should be putting out on average 425 fps Appreciate any comments