So I picked up my first glock to be my main carry weapon. It's a 2nd Gen Glock 19 that's completely factory. I was reading a lot about different sights and was wondering if anyone knew where I could learn about them. A coworker suggested trijcon night sights but all those look like are the standard sights with a glow in the dark paint applied to them. I'm trying to google for different sights and even searched this forum but am not finding much useful information. I'm just looking for the different available sights with explanations on what they should be used for. Also info on how to install them and what sizes are recommended would be great. Can anyone point me in the right direction?