Glock 20/20SF question

[Banker1]

I came across a brand new SF frame for G20/21 for a great price. Since I have smaller hands, it fits me much better than my current standard G20. The only difference that I can see is the size of the grip. Can anyone tell me for certain that my standard G20 slide will fit the new SF frame?  It sounds like a simple question, but having trouble getting a definite answer.

[The_Shadow]

It should fit just fine, its the Gen 4's have a different recoil rod purchase in the slide and the Gen'4 frame has a larger dust shield to accommodate.