{"product_id":"proof-research-ar-style-carbon-fiber-barrel-6-5-grendel-18in-rifle-gas-1-8-twist-121665","title":"Proof Research AR-Style Carbon Fiber Barrel 6.5 Grendel 18in Rifle Gas 1:8 Twist 121665","description":"Product Description\n\u003cp\u003eThe Proof Research AR-Style Carbon Fiber Wrapped Barrel in 6.5 Grendel delivers a precision-engineered solution for shooters who demand lightweight performance without sacrificing accuracy or durability. Measuring 18 inches with a rifle-length gas system, this barrel is turned down to a reduced profile and wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin. The carbon fiber construction actively diffuses heat along the barrel's length, enabling faster cooling and longer-lasting performance during sustained fire. Proof Research's Caliber Matched Gas System (CAMGAS) repositions the gas port to ensure optimal gas pressure for the 6.5 Grendel cartridge, resulting in a noticeably softer recoil impulse, reduced fouling in the receiver, increased extraction reliability, and less wear on brass cases. With 4-groove rifling at a 1:8\" twist rate and a 5\/8-24 TPI threaded muzzle, this barrel is built for those who want the very best in AR-platform performance.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 64% lighter than traditional steel barrels of similar contour, reducing overall rifle weight without compromising strength\u003c\/li\u003e\n  \u003cli\u003eAerospace-grade carbon fiber wrap infused with a proprietary matrix resin promotes rapid, uniform heat dissipation for cooler, longer-lasting barrel performance\u003c\/li\u003e\n  \u003cli\u003eCaliber Matched Gas System (CAMGAS) tunes gas port pressure specifically for 6.5 Grendel, delivering softer recoil, less fouling, and improved extraction reliability\u003c\/li\u003e\n  \u003cli\u003eMatch-grade accuracy with no point-of-impact shift during high-volume fire and reduced harmonic barrel vibration for consistent shot placement\u003c\/li\u003e\n  \u003cli\u003eThreaded 5\/8-24 TPI muzzle with .750 gas journal diameter for broad suppressor and muzzle device compatibility\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 PROOF RESEARCH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e AR-Style Carbon Fiber Barrel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 6.5 Grendel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 18\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas System:\u003c\/strong\u003e Rifle Length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwist Rate:\u003c\/strong\u003e 1:8\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrooves:\u003c\/strong\u003e 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMuzzle Thread:\u003c\/strong\u003e 5\/8-24 TPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Journal Diameter:\u003c\/strong\u003e .750\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Carbon Fiber Wrapped\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 lb 19 oz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 121665\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 843068121665\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":"PROOF RESEARCH","offers":[{"title":"Default Title","offer_id":44134789251194,"sku":"FLX-152027","price":1035.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308988777.png?v=1781060333","url":"https:\/\/tlooutdoors.com\/products\/proof-research-ar-style-carbon-fiber-barrel-6-5-grendel-18in-rifle-gas-1-8-twist-121665","provider":"TLO Outdoors","version":"1.0","type":"link"}