Apropos of gnoahhh's comment about the Merit Adjustable Aperture, it turns out that Skinner Sights is currently selling the Merit #4 Hunting Adjustable Aperture on an "on again, off again" basis. Apparently, one of the offspring of the founder of Merit Apertures is manufacturing the #4 in small lots and allowing Skinner to sell them. At the present time they are back ordered but Skinner will allow prospective purchasers to put their name on a waiting list for "first come, first served." I'm going to put my name on the list in hopes of getting one of the #4s to go with a 30-1/2 that I have. Hope this helps those who might be interested.
