it's finished for now...
KS p90
380 fps with .30g bb (400 fps with hopup off, 500 fps with .20g)
locked on semi-auto (disabled full-auto)
JBU 8 1/4 suppresor + thread adapters to cover inner barrel and extended rubber butt pad
509mm stock barrel (from tavor)
type 0 cylinder
element high torque gears
matrix magnum
guarder 70degree bucking (dental floss mod)
poly piston steel rack, aluminum PH (AOE adjusted)
ball bearing piston head and spring guide
guarder o-ring nozzle
JBU M150 spring
9.6v 1600 mAH (pulls the spring easy with no overheating)
Reed's Mosfet/deans
barrel stabilized
tested effective range: 200 ft. can reach 230-250 with elevation
still need to replace stock tappet plate
replaced tappet plate spring with stronger spring
and replaced cutoff lever spring with weaker spring to prevent wear.