Yes. The Ghost Inc Extended Slide Release will fit Gen 1-4 Glock 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40 & 41.
This release should fit that pistol.
The Glock 45 is a Gen 5 addition. Its standard is the ambidextrous slide release. For use of other parts though, this slide release will fit most 3 pin Glock frames and some 2 pin. This part may fit that pistol though it is not confirmed as compatible.
No, this slide release is only for gens 1 - 4.
The difference is position of the release. The Forward release will be further forward on the pistol. This would be beneficial if you are a shooter with larger hands.
Yes, this will work with those firearms.
Yes it will.
Yes, this will fit a Gen 3 Glock 17 as long as it is a 3-pin model (some early Gen 3 models were 2-pin).
Yes, it will.
No, this does not fit the Glock 42 or 43. Ghost Inc. makes a different model for the 42 and 43, but unfortunately we do not carry it at this time.