It's not like any KAPP or 32 degrees gun I've ever seen.
All of the aluminum (body, barrel, pump handle, main pump guide rod, and grip frame) are anodized to match. The gun is definitely custom, and probably a one-off. I'll take some additional pics tomorrow so you guys can see more detail - there are some neat touches to the gun, and I'm resonably sure that whoever built it never intended for it to carry a set of pneumaics.
The story it came with was that it was a "prototype" made by the guys at CCM/Works, possibly by Jason Chipley himself. I have no idea if that's true or not but was hoping someone here could confirm or refute the story the gun came with.