No one..?
I know of course id have to have 9mm mags.Glocks were great about that. would be great if the Sig could do it as well.
No one..?
You'll need the magazines, slide and barrel.
Check out this post. I have a quote from the dealer.
Sig xchange ?
Yes, I have a P226 in 40 and I have all three barrels!
As long as your 229 is a 40 or 357SIG to start with. You'll have to get a Bar-Sto 9mm barrel and may have to have it "fitted".
You might want to change the re-coil spring, a little lighter.
Lateck,