I have tried to machine an Autococker body from scratch and gave up about 1/2 way threw because getting the tooling for the threading on the front block, the Barrel threads and valve nut would have cost to much to be worth just the one body.
But you can find alot of info on the exact messurements
here...
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Tippmann Owner, Smartparts Owner, Autococker Owner, Pump Owner, Seridan owner, Automag owner... Gun Collector
Homebrew Mod God
Tippmann Mods:
Spring Loaded RT,
Mirror Polished Internals ,
High Flow Valve,
Full auto Mod
Smartpart Mods:
Ion Foamie
Cocker Mods:
EZ Timing Bolt
If you make your own custom parts put this in your sig.