Redhawk, perhaps I should have been more specific - used to be sold in my area by one shop only back in the '80s, then they disappeared from the scene. This was, of course, prior to the internet. Still think they are a bad idea.
They're in Vegas were I live. I ran into the vendor at a gun show, he didn't have any on hand, TBS, I would have bought some just for the heck of it. I still would like to get some just to waste some of my million's.