I believe only with 10 round mags.
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 23, IMO.
Yes, a Glock 19 9mm magazine can be used on a Glock 23 since both firearms are chambered in 9mm.
Yes
The KJW Glock 23 only can use KJW Glock 23 magazines. You can buy these from amazon.com for 15 dollars.
No. Because a Glock 26 is chambered in 9mm, as a Glock 23 is chambered in .40 s&w. For example you can use a Glock 22 (full size) in Glock 23 (compact) and in Glock 27 (sub-compact) But you cannot use Glock 27 mags in Glock 23 or Glock 22.
You cannot just swamp them out no.
Contact Glock directly. They will mail you a manual.
You will need to call Glock
There are 3 different magazines for a Glock 23- 10 CARTRIDGES (not bullets) or 13 or 15.
You'll need to be more specific - there are 5 pistol models that use .40 S&W rounds. They are: -Glock 22 -Glock 23 -Glock 24 -Glock 27 -Glock 35