This Luth-AR A3 flattop upper receiver assembly is a ready-made foundation for AR rifle builds chambered in .223/5.56. The receiver ships fully assembled and includes an M4-type feed ramp, shell deflector, forward assist, ejection port cover, and a charging handle. Precision machined from a 7075-T6 aluminum forging and finished with a hardcoat anodize, the unit balances durability with a serviceable weight profile. The 12-position Picatinny (1913) rail provides a versatile mounting platform for sights and accessories.
Key Specifications
- Chambering specified as .223/5.56 per manufacturer description.
- Machined from a 7075-T6 aluminum forging for strength and consistency.
- Finished in a hardcoat anodized surface for corrosion and wear resistance.
- Equipped with a 12-position Picatinny (1913) accessory rail for optics and attachments.
- Features a M4-type feed ramp to support reliable feeding.
- Includes a charging handle as part of the assembly.
- Built with shell deflector, forward assist, and ejection port cover installed.
- Finished color listed as Black by the manufacturer.
- Designed to fit AR rifles as the intended platform.
- Product classified as an upper receiver assembly.
As a purpose-built flattop upper, this Luth-AR assembly offers a robust, versatile platform for a range of AR projects—from competition and range use to general-purpose builds. Its forged construction, M4 feed ramp, and included charging handle reduce assembly steps while the Picatinny rail simplifies mounting optics and accessories. Choose this upper when you want a straightforward, durable component to serve as the backbone of your next build.
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