Sorry for the necro post but I thought it seemed fitting. I am currently running an M4 with a front wired 11.1v lipo. The gun is second hand to me and I have fried 2 switches in the two games I have had it out. I have a MOSFET installed but I think there was something wrong with the way it was wired (there was a wire from the battery connecting directly to the switch which I believe is wrong).
I am considering down grading to a 7.4 buffer tube lipo or a crane stock NiMH. If I were to go the buffer tube route would I need to replace my buffer tube? I am aware that there are some after market tubes that have a slightly larger diameter but I dont know if it is necessary.