Ok, just picked up a G23 gen 3. Not being one to leave a sleeping dog lay, what kind of customizations should I do. Just a everyday ccw/ go ride my bike pistol.
I've been carrying Glocks since the early 1990's and can tell you this, as is, they shoot great. There are several things I do to my carry Glocks and firmly believe they all help in mastering the fundamentals. My main carry Glocks today are the G23 and G19.
Word of caution first, my recommendations are for entertainment only, all work/modifications should be performed by a competent gunsmith.
When performing trigger work on a carry pistol, going lighter than 4-4.5#'s is asking for trouble. Train with your pistol and learn the trigger 100% prior to needing it. Use proper grip and keep you finger off the trigger until ready to fire, light triggers will go off sooner than you think.
Pick what you like and discard the rest. These are things I do;
1. Lone wolf or Ghost 3.5# connector
2. Polish the trigger bar and cruciform area
3. Polish the firing pin safety
4. Polish the firing pin lug
5. Change the firing pin block/safety spring
6. Change the 5# trigger return spring to a 6# spring (pulls harder to the rear to assist the trigger pull)
7. Add Night Sights (True Glow)
8. Stipple the grip/frame area to preference. Wet or sweaty hands will slip on grips.
9. Round and stipple the front of the trigger guard (just below light switch area)
10. Under cut the grip to trigger guard juncture point to help reduce "Glock Knuckle" and lower the pistol in your hands.
11. Under cut the trigger guard area at mid point to help lower the pistol in your hands
I train with these pistols to 60 yards from multiple barricade positions, the modifications do help over the "As issued" configuration.
G19 with Streamlight TLR1-S and 2 shot magazine extension
G23 with Surefire X-300