I just got off the phone with Mike at CZ. I called to ask if factory stock, unmodified CZ 550 extractors are designed to snap over the rim of a round dropped into the chamber by hand. He told me that, just like an unmodified M98 Mauser, they are NOT designed to do so.

The extractor on my 550 will NOT snap over the rim of a so-chambered round. Others have reported that theirs do snap over.

Regarding factory stock, unmodified extractors, will yours snap over a round dropped into the chamber by hand?