I haven't built one, but I've handled several different versions of them and they feel great at the shoulder. You'd have to check with Clay, but I think you can get them with differing levels of hardware. I've wanted to take one of those kits and make a little fancier "chief's gun" version of it.
I have done a few of Clay's other kits and they went together fine. Like Track's kits, all of the inlets are a little undersized so you'll need to do some trimming to get the parts to fit.
Clay has sold a bunch of guns for me and he has always treated me fairly.