If you have been looking to convert your old, reliable Remington 870 field shotgun into a home defense model, then this is the part you need. This aftermarket Mossberg built Remington 870 replacement barrel is the perfect addition to your collection. This barrel features a fixed Cylinder constriction and a smooth bore perfect for Buckshot, Birdshot and rifled slugs. The barrel is 18.5 long and features a bead front sight. Specifications and Features: 90335 12 Gauge 3 Chamber Smooth Cylinder Bore Bead Sight Blued Note: This barrel is not threaded to accept chokes, it is fixed at the Cylinder constriction rate. Fits: Remington 870 Made by Mossberg.