This A1 C7 Retro Complete Upper Barrel Assembly seamlessly merges the iconic A1 aesthetics with contemporary performance enhancements. At its core is a robust 20″ chrome-lined 1-7 twist barrel designed for long-lasting durability and accuracy finished in manganese phosphate for exceptional resistance against corrosion while retaining a vintage military appearance. The barrel is paired with a .625″ non-F marked front sight base (FSB) staying true to the A1 era’s precision while maintaining practical functionality. The upper receiver is a C7-style complete upper receiver featuring A1 Rear sight with a built-in brass deflector bridging classic looks with enhanced practicality. An A2 charging handle provides easy manipulation while the A2 hand guard offers modern durability with a nod to the timeless design. For effective muzzle control the upper is finished with an A2 flash hider minimizing muzzle flash while enhancing shooting stability.