Product DescriptionThe One Horse LLC OHCU01 is a 16 inch 5.56 NATO complete upper receiver built for dependable performance, accuracy, and easy integration with compatible Mil-Spec lower receivers. Designed for shooters who want a ready-to-install upper assembly, it features a SOCOM profile barrel with a durable black nitride finish, a 1:8 twist rate, and a 1/2x28 thread pattern for muzzle device compatibility. A free-float 15 inch M-LOK handguard helps enhance barrel stability while providing versatile accessory mounting space, and the included bolt carrier group and charging handle make this upper a convenient, complete package. Built in the USA, this upper receiver is suited for range use, training, and general sporting applications.Product Highlights 16 inch 5.56 NATO complete upper receiver built for reliable cycling and consistent performance Black nitride SOCOM profile barrel offers durability, corrosion resistance, and simplified maintenance Free-float 15 inch M-LOK handguard provides flexible accessory attachment and improved barrel stability Includes bolt carrier group and charging handle for a more complete, ready-to-install upper assembly 1:8 twist barrel and 1/2x28 thread pattern support broad ammunition and muzzle device compatibility Specs Product Type: Complete Upper Receiver Caliber: 5.56 NATO Barrel Length: 16 in. Barrel Length Range: 16 in. to 16.99 in. Barrel Profile: SOCOM Barrel Finish: Black Nitride Twist Rate: 1:8 Thread Pattern: 1/2x28 Handguard: 15 in. M-LOK free-float handguard Rail: Full-length Picatinny rail Includes: Bolt Carrier Group and Charging Handle Compatibility: Mil-Spec lower receivers Country of Manufacture: USA MPN: OHCU01 UPC: 850078799289 Brand: One Horse LLC Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.