i would also like to know, as that looks like the good closed cell foam. its tough to find that stuff other than in 1" thick layers. would love to know who can and will do custom cut and fitting of the closed cell foam.
It came from case club. It seems to be several layers of the closed cell foam glued together. The case I ordered was for the AXMC rifle. I have altered it a little by cutting out some of the foam that was there to make certain items fit. I asked if they could alter the original foam a little to accommodate some other items but they could not. If I wanted one specific I had to order 10 cases and then I could specify how I wanted the foam to be cut.