the FAQ on the Beretta Forum I contributed to and some of the pics are mine.
All Combat and Stock variants were made in Italy. All hit the USA before going to other markets. My new/unfired 92 Combat was Australian market and re-imported to the US ca. 2014 or so by a third party. The 98 Combat came recently to the USA via a third party importer (The Attic / TAI Minot, ND). My second used 92 Combat was also TAI imported recently.
the hammer, sear and trigger blade are SAO sku'ed parts and the "faux" Combat I also have uses them but is a US-made normal 92 frame with converted 92D Brig slide.
There are several varations to the Combat over time. Check the pics in that FAQ post where my pics document them. Some have pre-travel and overtravel screws in the frame while some have an overtravel screw in the trigger blade itself. Also, checkering can vary as can the degree of the undercut and length of the beavertail.