Luth-AR A3 Flattop Upper Receiver .223/5.56 – Assembled w/ Charging Handle

The Luth-AR A3 Flattop upper receiver is a complete, factory-assembled upper for the AR platform chambered for .223/5.56. It ships with a charging handle and standard AR controls to streamline builds and replacements. Precision machined features and a full-length Picatinny mounting surface provide a ready foundation for optics and accessory setups.

Key Specifications

• The receiver is chambered for .223/5.56.
• This item is a A3 Flattop upper receiver assembled with a charging handle.
• It includes a M4-type feed ramp for reliable feeding.
• A 12-position Picatinny accessory rail provides mounting for optics or flip-up sights.
• Included features are shell deflector, forward assist, and ejection port cover.
• The receiver is precision machined from a 7075-T6 aluminum forging.
• The surface is finished with a hardcoat anodized coating for scratch resistance.
• It is designed to fit AR rifles.
• Standard exterior color is black.
• This item is sold as an upper receiver assembly.

Built with forged 7075-T6 aluminum and a hardcoat anodized finish, this Luth-AR A3 Flattop upper offers a durable, no-nonsense foundation for AR builds and upgrades. Its full-length Picatinny rail and M4 feed ramp make it adaptable to a wide range of optics and accessory configurations for common .223/5.56 applications.