Can't say I have any information to share regarding the Behlert sights, but I do have a couple. Both are are white outline. I picked up a Mod 29 years ago that had a chopped off barrel, mismatched nickel cylinder, and no sights. I put on a nickel 6" tube (homemade pinto!) and one of the Behlerts, haven't looked back since. Great sight picture, and this thing is rugged.