[MuzzleBlast]

Besides reaming the chamber and using a heavier spring, what all is involved in a 9x23 conversion to make sure it will run right?

 

[MuzzleBlast]

Didn't realize I was asking for top secret info!

 

[jm10mm]

It depends what your converting. If its a 9mm you have to also cut the ejector back since the 9mm case is shorter. If its a 38 super you need to tune the extractor to fot the rim of the 9x23. The only thing I am unsure of is the amount of lock-up and timing. Being its a faster bullet you may want to unlock the slide faster.

 

[eerw]

Depending on what you are converting from..

Things to consider are:

barrel chamber
ejector (right length)
extractor (aftecs work well, otherwise adjusted for the case rim)
firing pin (fitted to avoid primer flow)
firing pin stop (oversized to keep the extractor from moving)
breech face width (not too big, not too small)
recoil springs (right weight for load..factory or handloads)

Other than that...I'm sure there are other things to throw i here.