Sharps - Go to the Pedersoli website. Among the accessories they sell is a single sight system. It's less than a hundred bucks and is the way to go.

I got the big one, .72 calibre. I've only shot it a few times, but damn! it's a fun gun! Don't have a regulated load yet but have absolutely no fear that I'll be able to load a good one once I put my mind down to it.

Have fun, and GET THAT SIGHT! You'll really love it. - Marc