Last summer I located a late model Sig 220 .45ACP , CPO with the E2 grip at the Kittery Trading Post at a very competitive price, several hundred dollars less than a new one and still less than several other used Sig 220's on the shelf next to it. The gun appeared mint and was in the Red cardboard box and the manuel was stamped Pre-owned. No night sights, but I still grabbed it as it looked unissued. The following Monday I called Sig in NH and searching their database they confirmed it had been a LEO gun from an unknown agency in Missouri. It appears it sat in the armory and was never issued, most likely traded back to Sig when the Department upgraded sidearms. Slick pistol at a great price. And, it shoots sweet too! Only issue is Gold Dots don't fit in the magazines (slightly too wide, only two fit in), so I use the new Sig HP ammo.