{"product_id":"diamondback-db-barrel-5-56x45mm-nato-16-m4-contour-1-8-twist-black-nitride","title":"Diamondback DB Barrel 5.56x45mm NATO 16\" M4 Contour 1:8 Twist Black Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eDiamondback DB Barrel\u003c\/span\u003e\u003c\/strong\u003e is an OEM replacement barrel chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e5.56x45mm NATO\u003c\/span\u003e\u003c\/strong\u003e and built for the \u003cstrong\u003eAR-15 platform\u003c\/strong\u003e. It features a \u003cstrong\u003e16\" carbine-length medium (M4) contour\u003c\/strong\u003e profile, a \u003cstrong\u003e1:8\" twist rate\u003c\/strong\u003e that stabilizes a broad range of bullet weights, and a durable \u003cstrong\u003eblack nitride\u003c\/strong\u003e finish.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eConstructed from \u003cstrong\u003e4150 Chrome Moly Vanadium steel\u003c\/strong\u003e, this barrel is engineered for long service life and reliable heat cycling. The \u003cstrong\u003enitride finish\u003c\/strong\u003e provides enhanced corrosion resistance and surface hardness for hard use in the field or on the range. The \u003cstrong\u003e1:8\" twist\u003c\/strong\u003e is well matched to common 5.56 NATO and .223 Remington projectile weights, making this barrel a versatile choice for general-purpose, target, and defensive AR-15 builds.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDesigned as a direct OEM replacement for Diamondback AR-pattern rifles and a fitting upgrade option for custom AR-15 builds, the \u003cstrong\u003eDB Barrel\u003c\/strong\u003e delivers factory-spec performance in the familiar \u003cstrong\u003eM4 contour\u003c\/strong\u003e profile.\u003c\/span\u003e\u003c\/p\u003e","brand":"Diamondback","offers":[{"title":"Default Title","offer_id":55007096799554,"sku":"148375","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_f0dd8b4a-9fe5-4897-b9d4-e6a386b7c02a.png?v=1784584616","url":"https:\/\/centerfiresystems.com\/products\/diamondback-db-barrel-5-56x45mm-nato-16-m4-contour-1-8-twist-black-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}