Luth-AR 16″ Lightweight Complete Upper .223 Rem 16″ Barrel

The Luth-AR 16" Lightweight Complete Upper is a factory-assembled AR-15 upper built around a 16" .223 Rem/5.56 NATO barrel. The barrel is made from 4140 Chrome Molly and uses a 1:9" twist. The A3 flattop receiver includes a bolt carrier group, charging handle, forward assist, and ejection port cover, while a low-profile gas system and a 15" Palm Handguard with KeyMod slots and a Picatinny top-rail provide modularity.

Key Specifications

• The barrel measures 16".
• The chambering is .223 REM/5.56 NATO.
• The barrel material is 4140 Chrome Molly.
• The twist rate is 1:9.
• The receiver style is an A3 Flattop.
• Included components are a bolt carrier group, charging handle, forward assist, and ejection port cover.
• The gas system is a low-profile design.
• The handguard is a 15" Palm Handguard with KeyMod slots and a Picatinny top-rail.
• The fit is for AR-15 platforms and the finish is Black.

This complete upper delivers a lightweight 16" barrel, a proven twist rate, and a modular handguard to support accessory integration and practical range use. With the A3 flattop receiver and the included components, it streamlines installation for builders and upgraders seeking a straightforward, reliable upper assembly suitable for a broad set of general-purpose applications.