Remington 870 Express Barrel The Remington 870 Express Barrel is chambered in 20 gauge with a 3 inch chamber giving shooters the ability to run heavier slug loads for deer hunting applications. At 18.5 inches long the barrel offers a shorter more maneuverable profile well suited to still hunting in thick cover or tight stands. A built in cantilever scope mount extends forward over the receiver allowing a riflescope or red dot to be mounted directly to the barrel for a repeatable point of impact even if the barrel is swapped between hunts. This cantilever design is a popular feature among dedicated slug barrels because it keeps the optic s zero consistent independent of the receiver. Finished in blued steel the barrel offers classic good looks along with solid corrosion resistance under normal care and maintenance. Made in the USA this barrel reflects the fit and finish standards Remington has applied to 870 Express production for years. Swapping to a dedicated slug barrel with a scope mount lets an 870 Express owner build a purpose specific deer hunting setup without purchasing an entirely new shotgun. For 870 Express owners looking to add precision slug capability with onboard optic mounting this 18.5 inch cantilever barrel is a direct and effective solution. Remington 870 Express Barrel Specifications Manufacturer: Remington Model: 870 Express Barrel Caliber: 20 GA Chamber Length: 3 Barrel Length: 18.5 Barrel Description: Cantilever Scope Mount Material: Steel Color: Blued Compatible Hosts: Remington 870 Express Available At: GrabAGun