The Peeprib is made by E A Brown Co (EABCO.com). I use one and just love it. The Peeprib is made for weaver-style mounts--I use Warne scope mounts and I can put a scope on or take it off my Encore and still maintain the same zero. I hunt in South Dakota, and they have a regular rifle season, then a muzzleloader hunting period, then rifle again for does for awhile, then back to muzzleloader. I can simply take the scope off and use the peepsight on the Encore for the muzzleloader season. The peep sight is adjustable and very precise. It extends the practical range of the 209X50 far beyond what the open sights would allow.
Shotgun