Guarder Enhanced Hop Up Chamber Set for Marui Hi-Capa GBB
Aluminum/Steel Construction (With Hard Anodize Coating Process)
Unlike stock plastic chamber which would bend & de-shape, this metal one give you rigidity
Fix Original part broken problem
Enhanced Steel Hop-up lever
Suitable for Tokyo Marui Hi-Capa 4.3 / 5.1 / Gold Match Series Airsoft Gas Blow Back GBB

As always, upgrading GBB Gun require necessary skill & technique to dissemble the gearbox, consult expertise if needed
Tihis Set Come With Gear & Screw