So far so good and now it's time to mount a light to my new rail.
 

My new flashlight is made by Streamlight and comes with different mounting adapters, battery, hardware, wrench and the light.
 

Speaking of the light, it has 500 lumens of power, a low profile ambidextrous switch, uses a single CR123A lithium battery and has a safe off feature which prevents accidental activation. The battery has a run time of 1.5 hours and has a monetary on mode when you press and hold the switch. This can be very handy if you don't want to give away your position while you're moving. But if you click the switch once, it stays on.
 

The tail-cap of this light is were the switch is located (arrow) and you have a choice of two positions, high or low. I choose the high switch location because after playing with it for a few minutes, it just fits me better. And just to let you know, this light works great!
 

I'm about 12 feet from the garage door and this is what 500 lumens looks like. I would have no problem hitting a target with this kind of light at this range, even out to 25 yards. And you can clearly see everything in the foreground too. This light puts out a ton of light in a very small package and so far I'm very happy with it.
 

The parts for my other gun is a little different but this is by design because the two weapons serve different purposes. This gun will mainly be used for target shooting so a light trigger and good sights are a must. I'll also be installing the same two parts as the other one: Extended Slide Lock and Slide Stop Lever. The parts on the right are mounting hardware for my new sight.
 

Here is my new sight system which is made by Vortex. This model is the Venom and is a 'red dot' type of sight. However, this dot is not projected downrange like some laser sights do. This is more like a hologram, and the dot is projected onto a lens that only you can see. Now these sight systems are great for someone with aging eyes, like I have. But these are also used in all kinds of shooting competitions.

One other option you have when buying this type of sight is size of the dot in M.O.A. or Minute Of Angle. In case you don't know, one MOA is about one inch at 100 yards. This equates to 1/2" at 50 yards, 1/4" at 25 yards, well you get the idea. I decided on a 3 MOA dot size, but they make all different sizes up to 12 M.O.A..

Now it depends on what type of shooting you'll be doing, which will determine what size dot might work best for you. Say I was shooting competition where you shoot steel plates and it's timed, I might choose a larger dot size to cover the plate making it easier to acquire your target. But when you're shooting paper like I plan on doing, a smaller dot size should work good for that.
 

Here is my model 17 which is about one inch longer than my model 23. And as you know having a longer sight radius is beneficial for hitting a target at distance. The caliber for this model is 9 mm, shoots really nice and most people don't have a problem with its mild recoil.
 

Speaking of recoil, this Tungsten Guide Rod should make this gun that much easier to shoot because the one that came with it is made out of plastic. The idea of using a heavier guide rod is: for every action there's an equal and opposite reaction. That means if the gun is heavier, then the felt recoil should be lighter.

Now you have a few choices when it comes to spring rates when buying a guide rod and I choose one that matches what came in it from the factory. The reason you might want a stronger or heavier spring would be if you were going to shoot some more powerful loads. With a stronger spring and a hotter load, those would work good together. And the same could be said for a lighter spring and lighter load.

To change your guide rod only takes a minute or two and that's it.
 

Here I'm checking how many pounds it takes to pull the factory trigger. This will give me a baseline and then I'll change the Connector Bar which should reduce the trigger pull. 
 

Here you can see it was just over five pounds to pull the factory trigger. And now I'm looking forward to something less. The new part should give me less than four pounds and the company claims 3.5 pounds. Let's see what happens.