Fatelvis
Member
I bought what I expect to be an older Sig 220, and was looking at spring kits for it, and noticed there is differences between newer and older Sigs. (Different kits for newer/older). Is one better than the other? Also, there is no proof marks on my pistol, (read about the letter codes to determine year), but can someone tell me when it was made by the serial#? It's serial# is G2727XX. Thanks!