Here it is!
200 more rounds at the range (400 Total so far) with no issues! 100 Magtech Steel Case, 75 reloads 115g Berry's 5.5g titegroup, 25 Rounds CCI/Speer 124g +P JHP!
This is my 2nd G19, bought in 2008
I did all mods myself.
Undercuts, smooth Glock Knuckle areas
Mild stippling
Gas Pedal
Gen 5 MOS Slide
Radian Ramjet/Afterburner
Ameriglo Protector sights
Holosun SCS MOS
Polished internals aka $0.25 trigger job
3.5lb Ghost Connector with overtravel stop
Vickers Mag & Slide Catch
Back cut behind Mag Catch
Tungsten Guide Rod & round spring
Surefire X300U
As for what's needed to do the Gen 5 Slide Swap:
1. Bore out the front of the frame to accommodate the larger bottom/front of the Gen 5 slide (because of the size of the dual Recoil Spring Assembly RSA). This is where you'll spend most of your time.
2. Adapter for Gen 3 RSA to use on Gen 5 Slide
3. Change rear slide plate to Gen 3 (not necessary, but looks better IMO
4. Safety check, and enjoy!
This took about an hour and a half.
Here you can see the functional parts are essentially in the same spot. Gen 5 left, Gen 3 Right.
Why did I do this you ask?
Finger Grooves.
Also in California: We have a "Safe" Handgun Roster and we cannot buy anything newer than a Gen 3 Glock, because they are not deemed "Safe" by the all knowing State of CA. We're already suing to get this fixed and it's well underway.
I wanted to use an optic that would cowitness with factory height sights, the SCS MOS does it best from what I've seen. And it doesn't look terrible
As you can see, this thing is LOW!
I have Shield RMSc' optics on my G43 & G43X & RMS on one G26 which cowitness' with factory height "iron" sights as well, so I'm already used to finding the dot fast with this height optic/sights and didn't want to change it up.
200 more rounds at the range (400 Total so far) with no issues! 100 Magtech Steel Case, 75 reloads 115g Berry's 5.5g titegroup, 25 Rounds CCI/Speer 124g +P JHP!
This is my 2nd G19, bought in 2008
I did all mods myself.
Undercuts, smooth Glock Knuckle areas
Mild stippling
Gas Pedal
Gen 5 MOS Slide
Radian Ramjet/Afterburner
Ameriglo Protector sights
Holosun SCS MOS
Polished internals aka $0.25 trigger job
3.5lb Ghost Connector with overtravel stop
Vickers Mag & Slide Catch
Back cut behind Mag Catch
Tungsten Guide Rod & round spring
Surefire X300U

As for what's needed to do the Gen 5 Slide Swap:
1. Bore out the front of the frame to accommodate the larger bottom/front of the Gen 5 slide (because of the size of the dual Recoil Spring Assembly RSA). This is where you'll spend most of your time.
2. Adapter for Gen 3 RSA to use on Gen 5 Slide
3. Change rear slide plate to Gen 3 (not necessary, but looks better IMO
4. Safety check, and enjoy!
This took about an hour and a half.
Here you can see the functional parts are essentially in the same spot. Gen 5 left, Gen 3 Right.

Why did I do this you ask?
Finger Grooves.
Also in California: We have a "Safe" Handgun Roster and we cannot buy anything newer than a Gen 3 Glock, because they are not deemed "Safe" by the all knowing State of CA. We're already suing to get this fixed and it's well underway.
I wanted to use an optic that would cowitness with factory height sights, the SCS MOS does it best from what I've seen. And it doesn't look terrible
As you can see, this thing is LOW!

I have Shield RMSc' optics on my G43 & G43X & RMS on one G26 which cowitness' with factory height "iron" sights as well, so I'm already used to finding the dot fast with this height optic/sights and didn't want to change it up.