Here is what little I know, I have seen the frames, and my partner has one as well, the ones I've seen are cast, and IIRC, they are trying to get the forged into the works. Honestly, I'm really impressed with the cast guns.
They are made by the same people that do their lowers, and this is a very reputable company. Can't say any more.
Dunno about the show. Sometimes we can get them down here in TN.