James, for a long time a FA bolt carrier in a AR was said to be vorbotten. The ATF sent a letter a few years back saying this is not so. Many high end ARs come with FA carriers these days.
I don't know about a FA hammer. Write them a letter and ask.
"No, it's not a silencer. This little doodad is my own invention. I call it a loudener." --Sledge Hammer