The sight I used is not made for a Zouave, in fact it was not even made as a peep. It is a long leaf Marbles open sight with step elevator. It had an insert which slides up or down after loosening a clamp screw. I replaced that sliding insert with a piece of hacksaw blade, annealed and filed to fit and drilled with a 1/8" peep hole. I used the existing cross slot of the original rear sight and filed that slot to a true dovetail to hold the Marbles sight. The long leaf then extends back so that the peep is just ahead of the hammer. I'd prefer it be a couple of inches closer to the eye but that was and easy way to get a peep on the Zouave so that is where it stands. At age 66 I just shoot much better with a peep and the original open sight was a total POS, much too close to the eye for an open sight. I doubt that anyone past their teens could get a decent sight picture with an open sight so close to the eye but most military muskets of that time were similar, only the two band Enfield had a decent rear sight placement. I know lots of people do shoot OK with the Springfield, Zouave, or three band Enfields, I just don't know how they do it. I see those sights as just a big hazy blob and can't get a real sight picture at all.