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Extreme Durability Upgrade Level 1 (*400 fps)

Sale: $102.00
Save: 15% off


  • Systema m120S Spring
  • Systema Metal Bushings
  • Systema Standard Ratio Flat Gears
  • Professional Installation

*fps is based on an average, firing .20 bb's.  Your actual performance will vary depending factors like inner barrel quality, length, bb weight and other factors. 

Sold Out
  • Part #: AEGDUR1400

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