Guarder SP150 Infinite Torque-Up Kit for Marui G3-A3/A4/SG1 11" Magazine Extension Tube let me share a little

let me share a little more information on it

For Tokyo Marui

130mm precision inner barrel

SKU KA-FS-04 Item Weight (gram) 120 Major Color Black Built Material Zinc Alloy Manufacturer King Arms Hop-up N/A Shooting Mode N/A Gearbox Type N/A Fit Battery Pack N/A Bullet Type N/A Pistol Power Source N/A

If you do want it changed

Guarder SP150 Infinite Torque-Up Kit for Marui G3-A3/A4/SG1 11" Magazine Extension Tube let me share a littleA complete kit includes ALL parts for upgrading your Airsoft Electric Gun AEG Guarder made this kit with all suitable parts to super tune up your AEG Rifle The combination of difference parts allow an optimal result & performance Hard and rigid material used, including S303 Stainless Steel, Brass, Polycarbonate, Aluminum, Acetal and Steel As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed