I am thinking about buying a Crimson Trace Laser Grip LG-439 for my new Sig P239 SAS. I have come across a couple of references saying the LG439 will not work with the SAS model. Then I have seen some others saying it works fine with the SAS. I didn't see any posts on this forum and I couldn't see anything specific on the CT website. Does anyone have any experience with this or know why it wouldn't work? I could see if it was a DAK version, but not sure why the SAS would be an issue.