Uncle Mike's Magazine Tube Caps- Replacement magazine cap with swivel base, 3/4in wood screw butt-stock swivel base and two Super Swivels. 870 Express Not for 3 1/2in mags. With conventional ball and detent lug system; Replacement magazine cap with swivel base; 3/4 in wood screw buttstock swivel base and two super swivels; 3/4 wood screw buttstock swivel base and two Super Swivels; - At Sportsman's Warehouse, we live for the thrill of the great outdoors. Whether you're hunting, fishing, camping, backpacking, or shooting, having the right gear is key to making every moment unforgettable. That's why we bring you only the highest quality, trusted brands-because your outdoor experiences deserve the best. From expert advice to quality gear and community events, Sportsman's Warehouse is more than a store-we're your partner on every journey. Come explore with us and experience the difference passion makes.