Sounds like the one I got from Aim, even down to the WS serial number. My sights were dead also but lined up. I didn't even want to take it to the range with the NY1 trigger spring, so I bought a complete spring kit, dot connector, G17 smooth trigger for it and installed everything last night along with a Vickers extended mag release and slide stop I had in my parts box. I had it at my LGS over the weekend and had them install a fresh set of night sights. Not surprisingly, the trigger pull is much nicer with the dot connector/standard trigger spring than with the standard connector/NY1 spring combination. I'm looking forward to my next range trip.