Yes, you read that right, I am finally building up my G36. I know what I am taking on, and I have done tech work before, but I am already running into problems I have never even heard of before. First off, I shredded a piston. Shimming seemed to be fine, if not a little tight, and I removed the first tooth, and added Sorbo to the Cylinder head. Second off, I had a 6mm gearbox shell in the gun, but I wanted to switch to a 7mm shell to help the gun out a bit. I can not for the life of me get the selector plate on though! I will attach pics below of the gearbox, if anybody knows anything, please say something! I seem to think it is a CYMA AK shell. Third, I am building a med ROF gun, should I use the dumpy piston head given, or use an aluminum one I have? Lastly, I have just about every cylinder type imaginable. Which one should I pick, and why? Edit: Photo's up! Also, I added a picture of gears I just got. I think they are a combo of XYT,G&P, and Guarder, but not 100%. Should I pick from the pile, and risk it, or use the stock gears, on the right?