See my reply to your PM.
But to summarize (as your post is slightly different now):
1) Metal barrel bushing is absolutely required to be used with straight barrel setup. Otherwise, straight barrel will not be supported and you will have huge cycling/accuracy issues.
2) V12 barrel is NOT compatible with barrel bushing setup
3) Not all Shooters Design slides will accept barrel bushing. You will need to check when you receive the slide.
4) I would recommend an enhanced recoil spring in the upgrade as well.
5) The POM nozzle set is the right one. I would just warn against using the floating valve it comes with, because it will malfunction if you use higher power gas like green gas / top gas / propane.
As for "what do you miss" that depends on whatever other performance/aesthetic characteristics you would like to achieve. But the basic issues with your setup are outlined above.
Last edited by ILLusion; November 3rd, 2010 at 13:23..
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