SKD G18 metal gears

any idea where i can gel metal gears for the g18

Dont think they exist. Little motor wouldnt be strong enough to pull back the spring to warrant having metal gears.

ok cuz i want the rof to increase

3 cell battery will increase rof but the gears wont last long

zhenduo gel blaster store has skd g18 all kinds of gear parts, certainly there is something you want.
check here: https://www.zhenduotoys.com/products/skd-g18-upgrades