The forend tube assembly is a crucial component of the Remington 870 12-gauge shotgun manufactured after 1985. This assembly houses the action bars which connect the forend to the bolt, enabling the pump-action mechanism to cycle rounds. It consists of the tube itself, the action bars, the forend nut, and associated springs and detents. Differences exist between assemblies designed for standard barrels and those for extended magazine tubes. Choosing the correct assembly ensures proper function and safe operation of the firearm.
This specific component is vital for the reliable operation of post-1985 Remington 870 12-gauge shotguns. A properly functioning assembly ensures smooth, consistent cycling of the action, contributing to the firearm’s legendary reliability. Changes in manufacturing processes after 1985 necessitated specific design considerations for this part, making it distinct from earlier versions. Understanding these differences is critical for proper maintenance and repair.