Hi! I have an Echo 1 Troy MRF-C and I want to upgrade it. I already did a post, but I want to know if I'm missing something, since I don't want to be oppening my gun a lot. Upgrades that I got: 1- Lonex Titan A1 motor 2- SHS 8mm Steel AEG Ball Bearing 3- Lonex M16A2/M4A1/RIS/SR16 (21.26mm) O-ring Nozzle *A* 4- ZCI Black 14 Steel Teeth Glass/Nylon Piston (Just in case that I need it) 5- Super Shooter Stainless Steel Ball Bearing Spring Guide for V2 6- V2/V3 NeoPad Sorbo Protector Pads 7- Scatterplot Sorbo for V2/V3 gearboxes - 3/16 thick - 70 duro 8- Echo 1 / Modify SP140 spring 9- Guarder Airsoft AEG Gearbox Teflon Grease Lubricant Upgrades in mind: A 6.03mm Inner barrel. Do I need something else? Any help would be great! Thanks!