$180 shipped prioirty FPS: varies depending on barrel RPS: 36 on 4000 mah 65C 11.1 Test video: https://youtu.be/bm6FKP9Wq3E Build list: Standard motor grip JG blue with SHS pinion ZFET mosfet JG gearbox shell radiused JG spur+ bevel SHS DSG Metal spring guide SHS M160 SHS piston swissed SHS piston head SHS bushings epoxied in JG ARL Unknown brand tappet JG cylinder SHS double o ring metal cylinder head Lonex air nozzle While we will happily offer advice and any assistance we can, when buying one of our drop in units you agree that we cannot guarantee feeding/ a certain fps or perfect fitment with your receiver as we are not installing the product. Returns: We only accept returns for the first 14 days, and only if your product arrives DOA or has a premature failure within that time period Warranty: If your product has a premature failure within 30 days of arrival, You may ship it to me and I will repair it and ship it back free of charge. This only covers normal use. This warranty is voided by things like using 14.8s, firing while jammed, opening the gearbox yourself, or other damage inflicted by user error. After the 30 day warranty if your product fails, still feel free to contact me at [email protected], and we will see what we can do.