1- Which model/ generation do you have?
All Gen 4:
G17
G26
G42
G30
2- Would you buy it again?
Yes on 3 of them. "Maybe" on the G30.
3- Was it acceptable when you got it?
Yes for all, but always room for improvement
4- What did you NOT like about it?
G26 - ejecting brass at shooter's face intermittently. Seems like a common Gen4 issue that has improved, but not all models are 100%.
G30 - Very wide grip (no added backstrap -- .45ACP double-stack mag). I'm thinking because it's such a compact model, Glock made the grip thicker to compensate.
5- If you modified it, what type of mod did you do? AND was the mod worth the cost and effort?
G26 - drop-in replacement trigger, steel guide rod and new spring, same trigger-pull weight as factory trigger, but added improved ejector and safety plunger, metal plate to replace plastic plate on rear of slide, Crimson Trace Red Laser Sight on rear of grip (pressure activated), extension on mag plate to add room on grip for pinky. Came with 3-dot night sites.
G17 - drop-in replacement trigger, lighter (4.0 lb) trigger-pull, added improved ejector and safety plunger, added 3-dot night sights.
The new triggers are OEM Glock triggers that have been polished to a blinding sheen from the site GlockTriggers.com. Kept my stock triggers in case I decide to go back to them. And since the triggers are OEM, they keep you compliant with the USPSA production class specs.
G42 - again, pinky extensions for the mags. 3-dot night sights.
G30 - totally stock. The mags for this one actually provide an extension for pinky-placement! Came with night sites. Have used it for open carry. For a sub-compact, it's kind of big and bulky.
6- I like adjustable sights because I tinker with different ammo.
If you have adjustable sights, what did you get? Are you satisfied with your choice?
No adjustables. I always replace the plastic factory sites if it comes with.
7- express any other pertinent comment
The G17 fits my hand the best. I almost need the smallest backstrap added, but it's fine without it.
G26 is a surprisingly effective 9mm in a small package. Not the smallest 9mm for carry, but standard mag hold 10rds, and you can use any other 9mm Glock mag with it, too.
My next Glock will be a G41. After that. G19. That assumes I don't see something I want more before I see the Glocks on sale!