Truglo's Magnum Gobble-Dot Xtreme easily snaps over rib without need for screws. Endorsed by the National Wild Turkey Federation. *Note- Designed ONLY to be installed on a shotgun barrel with a ventilated or solid rib design. Fits- Browning Maxus, Silver; Charles Daly; Remington 870, 1100, 1187; Traditions Turkey II, Waterfowl II, ALS 2100 Field; Vernona and Weatherby Orion, Athena O/U 12 ga and SA-08 20 ga.
Specifications:

Type	Front/Rear Set
Frame Material	Steel
Frame Color	Black
Firearm Fit	Shotgun
Base Configuration	Vent Rib .25"
Style
Front Material	Fiber Optic
Rear Material	Fiber Optic
Front Color	Red
Rear Color	Green
Rail Size
Windage Adjustment
Elevation Adjustment
Fiber Diameter	.060" F/.035" R
Firearm Type	Shotgun