New and unused (no original box) vintage satin blue Remington 870 20ga slug barrel for 2 3/4" or 3" shells, with smooth bore, Improved Cylinder fixed choke, and adjustable rifle sights. $275 shipped. This is a beautiful 20ga slug barrel that will perfectly match a vintage satin blue 870 Wingmaster 20ga. Remington doesn't make them like this anymore.