--- title: "FN America AR-15 18\" Barrel Chrome-Lined" description: "18\" rifle-length AR-15 barrel chambered in 5.56 NATO. Chrome-lined bore and chamber, M4 feed ramps, and manganese phosphate finish." canonical_url: "https://www.kygunco.com/product/fn-america-20-100042-ar-15-rifle-length-barrel-5.56-nato-18-black" meta: author: KYGUNCO "og:description": "18\" rifle-length AR-15 barrel chambered in 5.56 NATO. Chrome-lined bore and chamber, M4 feed ramps, and manganese phosphate finish." "og:image": "https://cdn.kygunco.com/assets/products/218600/thumbnail.jpg?v=1713455796" "og:image:height": "500" "og:image:width": "500" "og:title": "FN America AR-15 18\" Barrel Chrome-Lined" --- > 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) / [Rifle Barrels](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/rifle-barrels) / FNM-20-100042 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/218600/main.jpg?v=1713455796) For illustration purposes only, this image may not be an exact representation of the product. # FN AMERICA AR-15 Rifle Length Barrel 5.56 NATO 18" Black 18" rifle-length AR-15 barrel chambered for 5.56 NATO, made with U.S.-sourced chrome moly vanadium steel. It features a chrome-lined bore and chamber, M4 style feed ramps, a matte black manganese phosphate finish, and is HPT and MPI inspected for added consistency. See Price In Cart ** 5 interest-free payments of **$48.30** 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 Almost gone. Order now before it sells out. Item # 218600 Style FNM-20-100042 UPC 845737008468 Condition New Manufacturer [FN America](https://www.kygunco.com/brand/fn-america) Caliber 5.56 NATO Weight 2 lb Barrel Length 18 in FN AR15 premium button rifled barrels are are manufactured using U.S. sourced Chrome Moly Venadium material per Mil-B-11595E. Each barrel is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure that it is free of microstresses or flaws, resulting in consistency and quality in every barrel shipped from the factory. The bore and chamber are chrome lined to help resist corrosion and provide resistance to heat erosion which greatly improves barrel life and reliable chambering / extraction. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. - Length: 18" - Model: AR-15 - Finish: Manganese Phosphate - Barrel Type: Rifle Length - Barrel Features: Chrome-Lined ** 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 FN America ```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/fn-america-20-100042-ar-15-rifle-length-barrel-5.56-nato-18-black#webpage","@type":"WebPage","description":"18\" rifle-length AR-15 barrel chambered in 5.56 NATO. 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