I am trying to tell if my type 2 rear sight is broken or if it is actually normal. I thought it was broken but started looking around for another one to purchase and noticed that some seem to look the same. The picture I have attached is one I found for sale. The part in question is on the left side of the elevation slide looks like part of it is broken off in the "channel" that it rides in. Is it indeed broken or is that how it is supposed to be? I started noticing it because the sight has some play in it, can twist it some, and that's when I noticed the left side looks like part of it is broken. Thank you for the help.