Not sure what's up with the PDF file but this is the email I received today after asking caatactical if I can use my G17 with an extended barrel....
Thank you very much for coming back to me.
Now that we are able to see the picture it is much clearer.
Unfortunately the Roni cannot be used with a long barrel such as this or with a longer one for that matter.
Please do not hesitate to contact us for more information if needed.