MSP R, Thanks for heads up. I wish I knew that before I round canned the sights. Anyway, my Huntsman is now wearing a 2.5 - 7X scope in medium mounds and I'm not sure I even have room for a rear sight. Right now I don't have a hammer extension of the rifle and I'm hoping I can mound a hammer extension below the the hammer because I don't have clearance for it if I attach to the top of the hammer.