Hellow , i hope i created post in correct place , after look if u have any post regarding RPK LCT NV upgrade here, i dindt see it. So i hope you could help me. I bough RPK LCT NV recently , after unboxing and crono test it was in 335FPS , i open it and replace spring for MS110 promethues ( i live in Spain so here for support wapon can goes to 400-410)now with only spring changes's 409-411 fps with 0.20. Im thinking to get lonex A1 engine short , and do wires with mosfet to get better ROF , i should i change gears too ? i'm open mind to revieved all kind advise. my plan : lonex a1 short ---> up to 37-40(ROF) wires 16awg + mosfet NANOAB active break flat nub and buking (modify or prometheus) any other recommendation is welcome.