Essential part for upgrading your Airsoft Electric Gun AEG A bumper-rubber is installed in both cylinder head & 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 velocity Recommended to use along with Upgrade Springs
-- LEVEL 2 Upgrade Series -- Silent Head Set for Version II Gearbox
Material : Brass & POM
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