Now it's time to remove the trigger assembly to change out the connector bar, which means almost everything has to come out. To remove the three pins I used two different size punches with the frame resting on that Wheeler universal bench block. This round block is made out of urethane so it doesn't harm your weapon as your working on it. And as you can see I have the frame stripped of almost every part.

Now this is the first time I've ever done this but it's really not that hard to do. The key here is to take your time, going slowly and being careful. See that assembly at the bottom with the trigger attached? That's the piece I'll be dealing with next.
 

To lighten the trigger pull on a Glock you'll need to remove and replace this piece (arrow). That part is called a Connector Bar. If you look close you can see it has a lip at the top and there's a mating part that rides against it. Keep this in mind.
 

The new connector is on the left and as you can see the only difference is the angle at the top. Well, that angle makes the difference between over five pounds vs three and a half. Now this is new to me because I'm use to a sear engagement type of mechanism. And those have two parts that slide against each other that are under spring pressure. But this type of gun is called a Striker Fire and as you can see they are very different because they don't have as many moving parts.
 

After putting the gun back together, here is what I have now. I read that after shooting a few hundred rounds the connector will wear in to end up with the claimed 3.5 pound trigger pull. That sounds about right and I look forward to having it even lighter. So far I'm happy with what I see.
 

Here you can see the other two parts that I put in, just like my other gun... which makes a huge difference. While I had the gun apart I could have replaced the magazine release to the extended model. However, after shooting a gun with that installed, I didn't like it. The reason is because it sticks out too far in my opinion, making it easy to accidentally bump, releasing your magazine when you don't want to. Let me tell you, picking your magazine off the floor while at the firing line in the middle of shooting is very embarrassing. And I realize that it just takes practice to get use to it. But then again I'm not shooting competition either where a quick magazine change is necessary.
 

Here is the adapter plate for my new sight. This will attach to the slide where the rear iron sight goes, which means I'll have to remove it. All the hardware comes with it depending on the sights that you might use.
 

Here is the other side of the adapter plate. The arrow is pointing to a relief because this side goes against your slide. However, my gun is flat in this area which makes me think the notch is for another weapon. I'm not sure. But I do know this plate is really well made and I'm very happy with it.