Williams makes an aperture sight just for the Winchester 94 Big Bore. That’s what I use. I really hate a bead front sight because of durability reasons, but I do use them on a few.
On my 375, I use the Willams rear and XS post front with the white stripe. Best there is IMO.
XS won’t sell that front sight individually, but I’ve bought enough sets of sights from them over the years that I had a few laying around.