No BG , Specialty now makes a verifier where the lens itself is 1/4 . They just came out with them not long ago. A friend of mine has one of them on his hunting bow. Also there are only two sizes of the verifier lenses and that is the 1/8 and 1/4 inch models. Wish they made a smaller one but as of date they dont. One of the things that I always liked about the specialty peeps was the ease of changing the peep size instantly