I have one on my 11-87....this is the best thing that I have done as far as turkey hunting in a long time. My eyesight has gone south so I put this sight on this year and I am 3 for 3 so far with it. I love the 2 colors it has....I use the low level green in the low light and switch to the red when the sun is higher and brighter.
I have the one with the integrated saddle mount attached....I figured it would be more heavy duty mounted that way. I am kinda anal so I check mine every time I leave the truck to make sure it is working even though I put a brand new battery in it prior to the season and I carry an extra in my vest....just in case