@Chaos Well actually, let me clarify. It came with the D rings for both side and top and came with exactly three of the "rubber" straps, which I painted a matte black to satisfy the overall look. This was fine for the top straps, but the only solution I could work out for the side was to cut the third one roughly in half at a 45-ish degree angle, then slice off and reverse one of the triangles and E6000 it back onto the end. I have yet to clean up, re-paint, or cut the edges to make these the "trapezoid" shape described in the CRL, but here they are as they exist now:
https://imgur.com/a/1tOZyvI
I'd like this to be a Plan B, as it will look better if I can get some higher quality STLs or printed ones, but if I have to make do, I will.