SD has already made an offer of 500 pieces. That's a lot, and they turned him down. Why the obsession with this? It's like people bugging Geissele to make M4 hammers again.
CC is obviously happy just to turn out mag tubes and for whatever reason, they don't share why they don't want to get into bolt handles or other parts that they made in the past.
If they wanted to again start making them, they would have already a long time ago.