I consider these guns rare. I would like to hear from owners of them. One owner advised me that his gun only EXTRACTED the fired .22 SHOT empty cartridge case and that the "Safety" thumb lever did not go to the "Safe" position when cocked. I just tested mine and got the same results. Also, because of the lax tolerance in the chamber and wear on the extractor, the extractor slips over the rim of the cartridge (loaded or fired) and will not extract the case. Does anyone else have this problem? I have talked with two people who own these .22 SHOT M220's. I have seen a picture of one other that was "U.S." marked with the "Ordnance Bomb" symbol on the internet. So, that makes 4 I know of. Please share you thoughts and information with me.