Hello, Thank you in advance for helping me find out more about the Sig 220. I was wondering if they have generation's like GLOCK does. I had not thought about Sig due to my little knowledge of the pistol its self. I would appreciate an explination as to why the price seems to varry so much from pistol to pistol. The round count and condition appear similar, I was wondering if I am missing something. Also, If you own a sig 220 I would appreciate a brief overview of your expierience with the weapon system. Thanks again.