{"product_id":"fn-ar-15-5-56x45mm-nato-20-m16-profile-button-rifled-chrome-lined-barrel-20100043","title":"FN AR-15 5.56x45mm NATO 20\" M16 Profile Button Rifled Chrome Lined Barrel 20100043","description":"Product Description\n\u003cp\u003eThe FN 20-100043 is a premium AR-15 rifle barrel chambered in 5.56x45mm NATO, built to military-grade standards for uncompromising reliability and precision. Crafted from U.S.-sourced Chrome Moly Vanadium steel per Mil-B-11595E, this 20-inch M16 profile barrel features button rifling and a cold hammer forged construction, delivering consistent bore geometry and long-term durability. A chrome-lined bore and chamber provide superior resistance to corrosion and heat erosion, dramatically extending barrel life and ensuring dependable chambering and extraction in all conditions. The rifle-length gas system optimizes cycling for smoother operation and reduced felt recoil, benefiting both competition shooters and tactical users. M4-style feed ramps and barrel extension promote reliable feeding, while the matte black Manganese Phosphate exterior finish guards against oxidation and corrosion. Every barrel is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) before leaving the factory, ensuring a product free of microstresses or flaws.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured from U.S.-sourced Chrome Moly Vanadium steel per Mil-B-11595E for military-specification strength and longevity\u003c\/li\u003e\n  \u003cli\u003eChrome-lined bore and chamber deliver outstanding resistance to corrosion and heat erosion, extending barrel life and ensuring reliable extraction\u003c\/li\u003e\n  \u003cli\u003eEvery barrel undergoes High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to guarantee a defect-free, precision product\u003c\/li\u003e\n  \u003cli\u003eM4-style feed ramps and barrel extension provide consistent, reliable feeding for uninterrupted operation\u003c\/li\u003e\n  \u003cli\u003eMatte black Manganese Phosphate exterior finish protects against external corrosion and oxidation in demanding environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e FN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 20100043\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 845737008550\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56x45mm NATO (.223 Remington)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 20\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e M16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRifling Method:\u003c\/strong\u003e Button Rifled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas System:\u003c\/strong\u003e Rifle Length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chrome Moly Vanadium Steel (Mil-B-11595E)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Manganese Phosphate (Matte Black)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore\/Chamber Lining:\u003c\/strong\u003e Chrome Lined\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Features:\u003c\/strong\u003e M4 Feed Ramps, Threaded Muzzle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFluted:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSights Included:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirearm Fit:\u003c\/strong\u003e AR-15\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: 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.\u003c\/em\u003e\u003c\/p\u003e\n]]\u0026gt;","brand":"FN","offers":[{"title":"Default Title","offer_id":44134903644282,"sku":"FLX-154335","price":282.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308988670.png?v=1781063619","url":"https:\/\/tlooutdoors.com\/products\/fn-ar-15-5-56x45mm-nato-20-m16-profile-button-rifled-chrome-lined-barrel-20100043","provider":"TLO Outdoors","version":"1.0","type":"link"}