LUTH A1 5.56 Slick-Side Retro Complete Upper 20″ BLK

This A1 Slick-Side Retro Complete Upper Barrel Assembly blends timeless design with modern performance for the discerning enthusiast. It features a 20″ 1-7 twist, chrome-lined barrel for superior accuracy and durability, with a manganese phosphate finish that resists corrosion while maintaining a period-correct appearance. Perfect for retro enthusiasts or modern shooters who appreciate a classic design with the performance of today’s technology. The barrel is paired with a front sight base (FSB), (.625″ diameter) and non-F marked for historical authenticity. The triangular A1 charging handle adds to the classic profile, giving you a smooth and efficient cycling experience every time. The A1 handguard not only preserves the traditional look, but maintains historical accuracy utilizing rivets to attach the heat shield for heat dissipation and a firm grip. At the front end, you’ll find the early A1 duckbill flash hider, a distinctive feature that reduces muzzle flash while maintaining a low-profile design. This upper is perfect for anyone looking to complete a retro build while benefitting from modern materials and construction techniques. Features: 20″ 1-7 twist barrel for accuracy Chrome-lined chamber and Chrome-lined bore for wear resistance and longevity Manganese Phosphate exterior finish for enhanced corrosion resistance Full Chrome Complete Slick-Side Bolt Carrier Group Chambered in 5.56 NATO .625″ Non-F marked Front Sight Base (FSB) for a historically accurate design A1 Triangular charging handle for an authentic, sleek design A1 handguard with riveted heat shields for a classic aesthetic and functionality Early A1 duckbill flash hider for period-correct muzzle control Specifications: UR-01-E3-S Slick-Side Upper Receiver, made from 7075-T6 Aluminum Forging BL-F20-7C 20″ Chrome Lined Pencil Barrel w/FSB (.625 Non F Marked) 1-7 Twist Rate Caliber: .223 REM Chrome lined chamber and bore Manganese Phosphate exterior finish Assembled with Front Sling Swivel FS-02 – A1 Front Sight Post (Round) A1 Slip Ring – Black Assembled with Retro A1 Rear Sight Kit (UR-21A-R) Retro A1 Port Door Cover Kit (UR-05A-R) UR-19A1 – Retro A1 Triangle Charging Handle – Black HG-A1 – Retro A1 Handguard – Black BL-06-LW – A1 Lock Washer BL-3P-DB – Early A1 Duckbill Flash Hider BC-AS-223FC – Full Chrome Complete Slick-Side Bolt Carrier Group Retro Chrome Firing Pin Retro Chrome retaining pin Informations: AT - Category B Including C.I.P. Compatible with AR-15 Lower receiver according to Mil-Spec diameter Complete the correct look with the LUTH A1 Butt Stock and A1 Pistol Grip in Black or OD Green Compatibel accessories, see under this article, accessories MADE IN THE USA