Is it me or that little part on top of the GB is only there on JG and Echo-1's g36? I dont rebember seeing any picture of a TM GB with that on top of it. Anyway It'll be a good thing to know when i'll be changing my bushings in a coupe of weeks.

its a CA gearbox. and oh btw i did get it back together and into my sl-8. and the body of the gun together and i fired it to make sure it shot and it does nicely. the only problem i now face is where i can put a battery. the mini tamiya extension wire that came with it has the big fuse box on it and is too short to go where the battery is sposed to. i think i need to somehow find a longer extension wire without that big plastic fuse tube on it. if not ill probly need a peq box for on top of its rail which will probly look dumb

i thought that warthers originals dick might have just slapped a ca sticker on the motor to say it was a ca gearbox but when i did take it apart i noticed that CA was stamped on the gears so i guess its genuine

Nope, all G36's have it. That little piece screwes into the back of the gun to hold the mechbox in place.