The XS sight system fits the Remington Pedestal model with a stepped bottom. Also fits Remington shotgun barrels with a front sight pedestal, vent rib models with a flat bottom and ones with ventilated ribs. The sights are designed to fit over existing bead sights from .125 to .140-inch diameters. The sights come with an adhesive that is used to fill in the gaps and to secure the sight to the barrel. The adhesive must fully cure before the shotgun is handled.