Picked up a used G23G4 that seemed to only have about a box of ammo ran through it. So far I have ran 173 rounds through it and wanted to show it off. I have had zero malfunctions shooting one handed, with and without a light mounted. I find the gen. 4, .40 S&W Glocks to have a softer recoil. The dual recoil spring really helps mitigate the snap. While shooting .40 S&W range ammo, it feels like shooting a G19G4 with +p premium self defense ammo. The more you shoot it, the more you get accustom to the .40 S&W recoil impulse. Kaluban Cloak holster 25 yards off hand with Trijicon HD night sights.