Take a look, just got a sight extension off of Ebay for the HHA sight. It is actually a lot nicer than I thought it would be for $35. Can't wait to sight it in. I was going to have one made for it and anodize it, but this will work just fine and saves me from all of the hassle. He is also selling a 2.5 inch extension as well. Just thought I would show and tell.