My BG is a serial # ECE, Just bought it and shot it two days ago. Now I am a die hard S&W collector… but I was very disappointed with my BG. First I had trouble racking the slide. My friend who I shoot with weekly also had difficulty pulling the slide. When I did shoot my BG it misfired 5 times and jammed twice in 50 rounds. THe trigger pull was not an issue in that I have been shooting my LCP. My laser was right on target. I will continue to shoot my BG, but I am not going to make it my carry weapon.