Well, I've given him a good six months to work this out.

Bought a Buzzard from him, it was supposed to include a bunch of extras including a matching vertical feed adapter and a velocity adjuster. I got the marker and some of the stuff in reasonable time, but the velocity adjuster and vertical feed didn't come. I contacted him, he said he'd find out what happened and get back to me. He never got back to me. I tried again about two months later, and same thing, never got back to me and I still haven't recieved the parts. I'm disappointed that I have to leave negative feedback, the marker itself was in excellent shape. I won't be doing business again.