I hope this isn't a repeat thread, I apologize if it si. I did look around first.
But, I own a G23 and G19, the kind with the finger grooves and rail on the frame. Those are the 3rd generation, right?
I recently saw an add in one of the Shotgun News advertising a "New" Glock magazine that was a Generation 4.
Can anyone tell mw what the difference is between these 4th Gen. mags and the others?