REMINGTON 20 GA BREECH BOLT ASSEMBLY FOR REMGINTON 870 EXPRESS Upgrade or restore the performance of your 20-gauge Remington 870 Express with this factory-original Remington Breech Bolt Assembly (Part #F404469). Engineered to the same specifications, tolerances, and materials as the original production components, this assembly ensures reliable cycling, proper lockup, and long-term durability in your pump-action platform. NOTE: These Breech Bolt Assemblies are a new, authentic Remington product acquired directly from Remington's OEM inventory. This item is guaranteed to be unused and fully functional. Mfg: Remington