CNC Aluminum Plastic Silent Ball Bearing Piston Head for Airsoft  AEG Gearbox

Essential part for upgrading your AE.G

A bumper-rubber is installed in piston head of this set

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 velocit

Packing: normal packing, 1pc