TruGlo Magnum Glo-Dot Xtreme Vent Rib Sight 6mm Green   #TG905XB

Each model easily snaps over rib without need for screws. Fiber diameter is .060”. Endorsed by Ducks Unlimited.

6mm fits most Beretta Field Grade, Benelli 20 ga., Browning Gold / A-5, Franchi and Winchester SX3 models.