Airsoft Canada Spring Comparison Chart
SystemA, Guarder, Prometheus, PDI, Angel, Top Power

These springs were tested on a Tokyo Marui P90 TR using the following equipment, upgrades and conditions:
BB: Excel 0.20g
Piston: SystemA Red Polycarbonate Piston (modified)
Piston Head: SystemA Aluminum w/ Bearings
Cylinder Head: Prometheus
Cylinder: KM TN Taper
Nozzle: SystemA
Spring Guide: Prometheus v2 w/ Bearings
Inner Barrel SystemA 6.04mm BS (335mm)
Chronograph: Shooting Chrony F-1
Average Temperature: 24.54º C
Hop Up: KM Triple Camber RH 55 set OFF
All springs tested were in brand new condition

Your results will vary from these published results.  Different upgrades will provide different results. The data contained in this chart should only be used as a reference.

Spring Comparison Chart
by Brian Wong, aka ILLusion ©2004
SystemA
Guarder
Prometheus
KM
PDI
Angel
Top Power
Velocity (fps)
1 Joule             307.435
  SP85           308.07
    MS90SP         312.725
      90M       315.05
          120%
  327.655
          85-95m/s    
        120%     327.95
  SP90           339.15
    MS100SP         340.185
      100M       340.56
          130%
  340.745
          95-110m/s    
M100             365.425
        130%     371.155
        140%     373.945
            150% 383.4
    MS110SP         386.735
  SP100           387.005
M120             392.355
      120M       393.255
        150%     395.45
            170% 399.37
      130M       406.8
  SP110           406.85
          140%   414.68
          110-125m/s
   
    MS120SP         420.555
        170%     420.65
M120S             421.93
  SP120           428.53
      140M       443.66
            190% 448.47
©2004
All Rights Reserved
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