Guarder Stainless Steel Bore-Up Cylinder Head for Version 2 Gearbox CO2 Reason being that with the

Reason being that with the long contact patch nub

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The barrel is also relatively short for the 7

- Nylon Fiber Foregrip and Receiver Grip

Guarder Stainless Steel Bore-Up Cylinder Head for Version 2 Gearbox CO2 Reason being that with theEssential part for upgrading your Airsoft Electric Gun AEG Bore Up Series upgrade part Increase bore size means greater air capacity & volume for propelling the BB forward Double O Ring Design ncrease the air tightness of the cylinder This is highly recommended upgrade for AEG with lengthened barrel since you need additional volume of air to propel BB out of longer barrel For GUARDER or SYSTEMA Bore Up Cylinder ONLY As always, upgrading AEG require