LWRC ICDIU5CK16ML ICDI M-LOK Direct Impingement 5.56mm NATO 16.1" 1:7" 1/2x28 Bbl FDE Complete Upper Receiver The LWRC ICDI M-LOK Direct Impingement 5.56mm NATO 16.1" 1:7" 1/2x28 Bbl FDE Complete Upper Receiver ICDIU5CK16ML is a premium, high-performance complete 5.56mm upper receiver designed for superior accuracy and reliability. Featuring a 16.1-inch barrel with a 1:7 twist and 1/2x28 thread, this LWRC ICDI Upper Receiver offers great precision and versatility. The M-LOK handguard provides a customizable platform for attaching accessories, while the FDE (Flat Dark Earth) finish ensures durability and a tactical look. LWRC ICDIU5CK16ML Ideal for those seeking a 5.56mm NATO AR-15 upper for sale, this LWRC ICDI upper receiver delivers top-tier performance in a sleek, M-LOK configuration. Whether you're upgrading your build or adding to your collection, this LWRC M-LOK complete upper FDE is a perfect choice for any 5.56mm upper receiver enthusiast. LWRC ICDI Direct Impingement 5.56mm NATO 16.1" 1:7" 1/2x28 Bbl FDE Complete Upper Receiver ICDIU5CK16ML