Thanks guys, i'll check those out.

As for parts I have a plethora of paintball parts (palmers stabilizer, and various other regulators) I can use to get that PSI from 800 (tank output) to 100 or so PSI so the FPS isn't more than 180fps when shooting.

Hello fellow spud heads. I am new here. I play paintball and in bigger scenario's we are allowed Anti-Tank launchers that launch 40mm pocket nerf rockets. Short of me finding a metadyne havoc launcher for $400 or so I'd like to build my own, but not sure where to start. I found instructions for a la...