For a receiver (peep) sight, I'd strongly recommend that you look into the Merit Iris apertures to fit whatever sight you get. They work like a camera shutter, and by simply turning the outer ring, the hole adjusts from a virtual pinhole for bright light very precise shooting, to at least a 1/8" hole for dimmer lights and faster sight acquisition for a quick, snap shot. They're absolutely the most versatile and useful addition you can make to any receiver sight, and they're only about $50, which for such a tiny and finely fitted instrument, is pretty much a bargain, IMO. And they can and will likely improve your shooting, particularly if you have astigmatism, wear glasses, and are diabetic like I am. Don't know what happened. One day I saw fine, and then .... it all went south. Gradually, but not all THAT gradually! They help me, but there's no such thing as a panacea. It's definitely something to consider if you have trouble with irons like I do these days. FWIW?