Can anyone tell me about this. Just bought it used. Has a serial number that starts with 373-. It doesn't have diamond behind hammer. But am I correct in this was a good bit after recall and should have been produced with upgrade during build. Ruger site shows 373- LCP prefix of 2010 build date. I also looked at a new LCP the other day and my trigger is superior to the newer short ones. Anyone else realized this as well. Any help appreciated.