PSEM Silent Piston Head for AEG Gearbox


  • Model: AS3799
  • Manufactured by: PSEM


  • PSEM airsoft AEG upgrade parts.
  • Silent piston head.
  • A bumper-rubber is installed in piston head.
  • Offer ultimate noiselessness and keep you from detected during skirmish.
  • Ball bearing piston head absorb most of the tension from the spring.
  • The speedy head movement offer constant muzzle velocity.
  • Recommended to use along with Upgrade Springs.
  • As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed.


  • PSEM model no. - P0004
  • Color - Red/Black
  • Weight - 20g
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    This product was added to our catalog on Tuesday 14 June, 2011.

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    Disclaimer: All airsoft guns, gas blowback guns, spring guns are NOT real firearms. All airsoft guns sold to US customers are affixed with an orange tip permanently.