The pistol you looked at is the LEM V1. The standard LEM's trigger pull is 8 pounds, but they can be converted to have a 7 pound, 6 pound, and 5 pound pull, depending on what springs are in it. The only way to tell which variant it is is to measure the trigger pull. V1 will be 5 pounds, V2-standard-will be 8 pounds, and V4 can be 6 or 7 pounds. All LEMs work the same and there is no decocker. The pistol you saw has the JF mag on it and with 5 mags, that is a pretty good price. The JF is about a $80 option and the three extra mags are roughly $60 each and they each hold 18 rounds. If you want a 9mm this would be a nice one to pick up. If you want a .45 though, the HK .45 can be had or converted to LEM, although the .45 cannot be had with a jet funnel or extended capacity mags. If you buy a standard off the shelf (unless it is the Combat Competition) LEM it will most likely have the standard 8 pound pull which is not near as nice as the light V1 LEM. When I first tried the LEM on my P2K (LEM V2) I was not overly impressed with it, but after converting to LEM V1 I fell in love with the trigger and converted all my non-match triggered shooters over to LEM V1.