Tula and Izhevsk both used haex receivers in about the same proportion, though you hear about the Tulas more often as a recent batch came in over the last few months.

That being said, I don't have an izzy hex yet Nice snag! Also VERY cool that it's a 45. Most hex receiver carbines are 1944 production. I've not even seen a 45 hex izzy in person, though they are out there.

It's likely unissued since refurb.