TruGlo's Glo-Dot Xtreme Universal Sight is compatible with all ventilated rib shotguns. It features an extremely low profile, has easy magnetic installation. This model includes multiple interchangeable fibers in different colors, 4 different sized mounting bases, and a carrying case.
Specifications:

Type	Fiber Optic Bead
Frame Material	Metal
Frame Color	Black
Firearm Fit	Shotgun w/Vent Rib
Base Configuration	Includes 4 Different Sized Mounting Bases
Style
Front Material	Fiber Optic
Rear Material
Front Color	Assorted
Rear Color
Rail Size
Windage Adjustment
Elevation Adjustment
Fiber Diameter
Firearm Type	Shotgun