Thanks for the input. I am getting frustrated with the Brass Stacker. In theory it looks like it should work well. And, I am going to give it another go before I make a decision to send it back. My question in looking at the SK mount is how does it attach at the rear of the hard sight. I figure one has to drive the pin out that holds the forward part of the hard sight in place in order to attach the forward part of the SK mount. How does the rear attach?