So hello all, Im currently continuing to upgrade the CM 035 or AKS-74U. As of now theres a Tienly GT35000 motor, element bearing spring guide, and a 9.6v battery. The gearbox is also shimmed, AOE'd, and relubed. It shoots 390 fps with stock compression parts @ 19 RPS* (*my best guess based on youtube help). The next step is increasing range and accuracy/consistency. Parts List - Guarder Cylinder enhancement kit (better compression/piston) SCS Nub Prometheus 469mm EG barrel Systema Nub Matrix CNC hop up unit Angel Custom Mock Supressor (for increased barrel length) Guarder High speed 16:1 gears (touch higher ROF) (Leaves only the GB shell and wiring original) BB's - Evike brand .25's - I know they arent the best option.. but the price and reviews are enough to make me buy them. Unless someone knows a better brand evike sells that arent bio or less/more than .25g and are white. I might attempt to remove the mound on the new bucking, after practice with the stock one for the best effect from the SCS. Do not reccommend a flat or R hop, i dont want them. (dont ask) Give me your opinions! I'm willing to revise this list, though I feel its pretty darn good for $263. Thanks for looking!