Hey guys,
I just my first mp handgun from summit gun broker. It's an mp .40 and from what I can tell it was manufactured in 2006. Looking at different pictures that some mp handguns have two pins and others only have one. The first picture I attached has one pin at #19 and the second picture has a second pin near where #19 is in the first picture.
The gun I received has the two pin holes and the larger hole has an arrow with the letter L.
Also, it looks like my gun is missing that pin.
Can someone tell me when this change was made? And what the arrow and the letter L signifies? Thinking I might need to buy a replacement pin.