Guarder SP120 Full Tune-Up Kit for Marui G3 SG1 scope mount 1V Batteries inside of the

1V Batteries inside of the Magazine Pouch (Mini-Plug)

Large thumb dial on bottom of magazine for wind up the compression spring to Load up the BB Bullet

Material: plastic

6 x barrel nut screws

Battery Size:    TM-BAT-84-1300-NIMH

Guarder SP120 Full Tune-Up Kit for Marui G3 SG1 scope mount 1V Batteries inside of theA 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