I tried the colt web site too with no known serial number.@steelfingers - My one concern I cannot get over is the serial number. It does not come up on the Colt site, that happens many times though. The Serial number is not clean, it is VERY bold and the numbers look a bit like someone may have re-etched them in there. I am a paranoid guy when something like that stands out to me. Sorry, just my thing.