MP5A5 problems

[dorado fever]

i have an echo 1 full metal mp5 and just recently broke a tooth on the piston and need to fix that. Can anyone help with instalation, as well as reccomend a good piston... also while i was at it i was thinking of also throwing in a tightbore and maybe new hopup. any help would be greatly appreciated, disruptive paintball quoted me at $40 plus parts... thank you

[Ghost Brandon]

Quadro offers a repair service

http://tucsonairsoftcoalition.com/forum/viewtopic.php?f=54&t=1951