the sight I described used by the Texas Rangers is very much what CMG has posted other than its not flat on the bottom..it is as fast as any sightt can possibly be..I have that old gun of my granddads for years and it is awesome.

I think you guys that are interested will find that instinctive or simi instinctive shooting is easier than some of you might think and is very accurate for most folks, it does require a little practice to get really good at it and some to stay good at it..At one time I could bust going away clays with a fair amount of regularity with my double 450-400. I guess about 3 out of 5 or better on a good day, and those I missed were very close I would bet. I think its saved my bacon a couple of times.