For sale I have some parts for a G36/version 3 gearbox variants. G36K rail system $50 An SRC metal gearbox with a high speed gearset and motor. Only thing left that is SRC is the case, all of the internals are upgraded. $70 Upgraded G36 style hop up $10 Madbull 6.03 363mm tightbore barrel $15 A bearing KWA gearbox $40 Another version 3 gearbox with echo 1 high torque motor. $30 Gearset in picture is sold Prices include shipping, will give better deals for multiple items purchased. Located on Long Island, NY. Willing to ship at buyer’s expense.