Hi, I'd like to add a rear aperture sight to my Savage 110 Hog Hunter. I'm wondering if there are any options out there for a picatinny-mounted one? It needs to be click/detent adjustable though. NECG make one for example, but it's not click adjustable. I'd like the option of being able to throw a scope on without removing the sight assembly, if the right product exists. Otherwise I'll go for the Lyman 57.