+1 import marking, and it's not likely a recent one. As others have suggested, our carbines have been coming back "post war" dating way back. Blue Sky/Arlington to date has been the predominate. Historically, "imports" have been considered lesser value than ones that have not been through the import/arsenal process, ie, ones that came back with our troops or never made their way overseas in the first place. Doesn't mean they're bad guns; they can be perfectly fine and I think I'd still (almost automatically) pick an (apparently) decent one vs a commercial copy. It's just that "imports"--or more accurately re-imports--suggest that, for whatever the intervening period has been (since WWII or Korea for many), the use, mis-use/abuse or storage conditions are largely unknown...so you often takes yer chances. But you can say that about a lot of things, so...