If you have a vent rib on your barrel all you'll need to do is go to a good sports shop and ask them to put a set of fiber optic sights on it. They clamp right on the rib just like a scope mount grips a rail on a rifle and you can adjust them for windage and elevation. You may need to try several different types of rifled slugs, but that's what you want to use in a smooth barrel as the rifling that imparts the spin on the slug is on it instead of the barrel like on a rifle or slug gun with a rifled barrel. The fiber optic sights won't set you back much money and you can take them right off when you want to wing shoot with the gun.