Does anybody have a part number for a type 1 P226,229 SAO trigger bar.

Type 1 have the pin in the bar.

Type 2 has the hole in the bar.

Are you looking to order one? Your best bet would be to call SIG with your serial #. Part numbers can change over time. That's why the armorer manuals don't list part numbers, just part names.
603-610-3000 option 1