So, I want a winter project that is somewhat of a challenge. I decided to try my hand at a DSG build since they have always intrigued me. I read tech_n9ne's thread, it was somewhat helpful. Here is what I plan to do: Gun: Cyma MP5k PDW DSG-http://www.airsoftgi.com/product_info.php?cPath=31_49&products_id=8225 Spur and bevel gear-stock JG Motor-JG blue (have already) Piston-I was thinking SHS something, 15 or 14 tooth? Spring/spring guide-I have a bearing spring guide, and I want to down grade the spring. Will probably get like a m120 or something. Everything else (cylinder/tappet/piston head/nozzle etc) will be kept stock. I will be running this on a 7.4 1800 mah 40c lipo. I need to know what kind of grease to get. Also can I get away without a mosfet? Will be switching to deans but keeping stock 18 awg wiring. My goal is to build a DSG as cheap as possible. I want to be in the 340-360 fps benchmark and around 30 rps. Will be shimming aoe etc of course as well.