I have a new HiViz front sight on my new H001, and, wow, does it ever make a difference. When I bought the Henry a couple of weeks ago, it quickly surpassed my 10/22 and Marlin 60 and became my favorite .22 rifle. Only problem was that the stock front sight was almost useless for me. I don't know why the stock sight blade is not thinner and why it couldn't have a brass bead.
But, regardless, for about $30 shipped I got the new sight from MidwayUSA. No problem installing it. Only complaint is that the metal does not match the blue on my barrel. It's a brown finish.
Works like a charm, though. That thing just lights up like a little beacon in daylight and makes it much, much easier to shoot.