Yes, unless you have swapped the magazine release button to the right side (for left-handed use). Gen3 magazines do not have the notch for a reversed mag release. G17 magazines can be generally used in all 9mm Glock models.
No cause its too short for gun the glock 17bis a bigger size and thr glock 19 is the compact size.
100-400 USD
However many are cycled through them. Different magazines ("clips") hold different amounts of ammo. For instance, the Glock 17 9mm standard mag holds 17 rounds, but the smaller Glock 26 holds only 10. You can also get extensions to hold more rounds, like the 30-round extended mag for the Glock 17.
Police most often use the 9mm Glock 17 or the .40 S&W Glock 22. The glock 17 magazine holds 17 rounds (+1 in the chamber), while the Glock 22 holds 15(+1).
There's no Glock with the model number "9", so I assume you mean a 9mm glock. The Glock 17 (full-size 9mm) holds 17 rounds in a factory magazine. The Glock 19 (compact 9mm) holds 15 rounds in a factory magazine. The Glock 26 (teeny-tiny 9mm) holds 10 rounds in a factory magazine. The Glock 17L/34 (competition) also holds 17 rounds. The Glock 18 (Select fire, full size 9mm) holds 33 rounds in a factory magazine. Higher capacity magazines fit and function in lower capacity firearms, for instance the model 26 can use model 17, 19, and 33 magazines.
Glock 17
Glock 17 and USP45
No, they are different calibers. A Glock 17 is 9mm and a Glock 23 is .40 S&W. A Glock 22 magazine would fit in a Glock 23.
Glock 17
No, the magazines are not compatible.
Glock 17
Glock 9MM Model's 17/19