Compatible with most vent rib-equipped 12-gauge and 20-gauge shotgun barrels, the Truglo F.A.S.T. Universal Sight is the ultimate drop-in shotgun sight upgrade for your favorite hunting or skeet shooting scattergun. Fully adjustable for elevation and windage, these sights feature a ramp-style rear sight and an ultra-bright .060" fiber optic blade-style front sight for maximum contrast and visibility, providing lightning-fast target acquisition under most lighting conditions. Great for use with slugs, buckshot, and turkey shot. Plus, CNC-machined stainless steel construction and the fade-resistant Fortress Finish™ offer long-lasting durability and exceptional performance in the most demanding hunting environments. No gunsmithing or permanent modification required.