The aluminum, chess-pawn-shaped front sight unscrews off a threaded post (be careful not to break). My idea was to thread a drilled/tapped M38 bolt (minus its socket head) over this post. Then the front foot of the M38 can be screwed onto the barrel. A dab of E-6000 for the rear foot.
Will try the same method for the rear sight using one of the peep holes so that I don't have to drill a larger hole.