This is a Truglo Sight known as the Glo-Dot, model TG90D.
The dual color fiber optic sight by Truglo is a .120" diameter red and green front sight. This sight is only to be installed on a ventilated or solid rib barrel.
Features:
Their original wing and clay sight in Dual Color
Fits all ventilated rib shotguns regardless of width or tapering
Extremely low-profile
Fiber diameter is .120";Endorsed by Ducks Unlimited
