QA1 K and Gen III

Sorry for my tangent, but yes you need to notch the pinch weld with the QA1 and factory K. I took mine to about an 1/8 inch from frame and put a quick bead with my Mig.

I did an E-body with a factory K and needed same body modification as well.

ALSO - put a hole in the lower frame for the bolt to come/slide out or shorten the lower bolt. Makes for easier maintenance in the future. Top bolt comes out without issue.

Hope this answers the question - if not, let me know.

Here are some pictures.