Colt Manufacturing M-16 A1 Upper Receiver

The Colt M16A1 Upper Receiver is an authentic retro-pattern AR component designed for shooters and collectors seeking the correct military-style appearance and functionality of the original M16A1 rifle. Built from forged aluminum, this upper receiver features the iconic fixed carry handle with integrated A1 rear sight, complete with classic windage adjustments and the proper historical profile.

This upper is compatible with standard AR-15 and M16 lowers and accepts mil-spec components, barrels, and furniture, making it an ideal foundation for clone builds, restorations, or retro rifles. The finish, depending on variant, matches the period-correct look of early AR platforms, offering both durability and authenticity. With forward assist capability and ejection port cover compatibility, the Colt M16A1 upper provides the classic handling and silhouette that defined the early generation of America’s service rifle.

Whether you are completing a retro clone, restoring a vintage rifle, or adding authentic Colt components to a collection, the M16A1 upper receiver delivers historical accuracy and proven reliability.