--- title: "One Horse 16\" 5.56 NATO Upper Receiver" description: "16\" 5.56 NATO complete upper with a 15\" M-Lok handguard, nitride BCG, mid-length gas system, A2 muzzle device, and Picatinny rail." canonical_url: "https://www.kygunco.com/product/one-horse-16-5.56-nato-complete-upper-receiver" meta: author: KYGUNCO "og:description": "16\" 5.56 NATO complete upper with a 15\" M-Lok handguard, nitride BCG, mid-length gas system, A2 muzzle device, and Picatinny rail." "og:image": "https://cdn.kygunco.com/assets/products/304235/thumbnail.jpg?v=1769093953" "og:image:height": "500" "og:image:width": "500" "og:title": "One Horse 16\" 5.56 NATO Upper Receiver" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Upper Receivers](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/upper-receivers) / NHR-OH-CU01 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/304235/main.jpg?v=1769093953) For illustration purposes only, this image may not be an exact representation of the product. # ONE HORSE 16" 5.56 NATO Complete Upper Receiver The One Horse 16" 5.56 NATO complete upper receiver features a 15" M-Lok free-float handguard, nitride bolt carrier group, charging handle, mid-length gas system, A2 muzzle device, and full-length Picatinny rail. It uses a SOCOM-profile barrel with 1/2x28 muzzle threads and is compatible with Mil-Spec lowers. $293.89 ** 5 interest-free payments of **$58.78** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Item # 304235 Style NHR-OH-CU01 UPC 850078799289 Condition New Manufacturer [One Horse](https://www.kygunco.com/brand/one-horse) Weight 1 lb Upgrade your rifle with this reliable 16" 5.56 NATO complete upper receiver. Designed for consistent accuracy and smooth operation, it comes equipped with a free-float 15" M-Lok handguard for secure accessory mounting and enhanced barrel stability. The nitride-finished BCG ensures dependable cycling with minimal maintenance, and the full-length Picatinny rail provides ample space for your preferred optics. Compatible with any Mil-Spec lower and proudly built in the U.S.A., this upper is ready for serious use. FEATURES - 16" 5.56 NATO barrel with 1:7 twist - 15" M-Lok free-float handguard - Nitride bolt carrier group (BCG) - Charging handle included - Clamp-on mounting system - Steel barrel nut and screws SPECIFICATIONS - Caliber: 5.56mm NATO - Barrel Length: 16 in. - Barrel Profile: SOCOM - Muzzle Thread: 1/2X28 - Twist Rate: 1:8 - Gas System: Mid-Length - Muzzle Device: A2 - Handguard Length: 15 in. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from One Horse ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/one-horse-16-5.56-nato-complete-upper-receiver#webpage","@type":"WebPage","description":"16\" 5.56 NATO complete upper with a 15\" M-Lok handguard, nitride BCG, mid-length gas system, A2 muzzle device, and Picatinny rail.","name":"One Horse 16\" 5.56 NATO Upper 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