Glock 23 and glock 17 interchangeable? I'm wondering if the barrel and slide would interchange with the frames...

Yes they do. But it will be long or short pending which way you go. Ejectors are different.

No they are not.

 

G22 and G17 can swap slides and G19 and G23 can swap, but you can not swap a full size slide (17/22) onto a compact (19/23) frame, or a compact slide onto a full size frame.

 

You may have some reliability issues with the .40 slide on a 9mm and vice-versa because of the different ejectors (the .40 ejector is straight and the 9mm ejector is bent in to the centerline)

No they are not.

 

G22 and G17 can swap slides and G19 and G23 can swap, but you can not swap a full size slide (17/22) onto a compact (19/23) frame, or a compact slide onto a full size frame.

 

You may have some reliability issues with the .40 slide on a 9mm and vice-versa because of the different ejectors (the .40 ejector is straight and the 9mm ejector is bent in to the centerline)

 Yes they do. Go put your 22 slide on your 23. It will function fine. The slide will just overhang and look weird. The locking blocks on the full size, compact and sub compact are in the same location in relation to the trigger housing mecahanism. I have my 23 slide on my 26 right now and it cycles perfectly.

 

Heck, you can even put your 22 slide on your 27.

Just because you can doesn't mean you should.

 

This is heavily frowned upon by Glock and I can think of at least 6 different ways that this is dangerous ad really bad for your gun.

 

But, to each his own. Be safe.

You cannot put a full sized slide on a compact frame or vice versa, the locking blocks are different. The compact and sub compact use the same locking block which is why your 23 slide fits on your 26 frame.