Glock Rough Textured Frames come in two models
Hacko @ BlueGunBlog discovered an image that shows two different Glock Rough Textured Frames. The difference between the RTF2 and RTF3 can be seen in the image below.
The G22 with the new frame that was at SHOT is the RTF2 model. I do not know if Glock ever plan on actually producing pistols with the RTF3 frame.

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