I just took a look at the CMP website. For M1 Carbines they only list barreled receivers which could be described as "junk" (their term). No exchanges, no returns. That page also noted that no more M1 Carbines are expected to come in. I got the impression that this means that they don't expect any to come in again ever. I hope they get some good ones in again some day. I'm just glad I shopped when I did.