{"product_id":"proof-research-ar-style-barrel-6mm-arc-16-1-7-5-twist-416r-stainless-carbon-fiber-rifle-length-threaded","title":"Proof Research AR-Style Barrel 6mm ARC 16\" 1:7.5 Twist 416R Stainless Carbon Fiber Rifle Length - Threaded","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eProof Research AR-Style Barrel\u003c\/span\u003e\u003c\/strong\u003e is a match-grade drop-in barrel designed for the \u003cstrong\u003eAR-15 platform\u003c\/strong\u003e and chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e6mm ARC\u003c\/span\u003e\u003c\/strong\u003e. The \u003cstrong\u003e16\"\u003c\/strong\u003e barrel is built around a \u003cstrong\u003e416R stainless steel\u003c\/strong\u003e core wrapped in a \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003ecarbon fiber\u003c\/span\u003e\u003c\/strong\u003e sleeve - a Proof Research signature construction that dramatically reduces weight compared to a traditional steel contour while adding barrel rigidity and improving heat dissipation for cooler, longer-lasting performance across sustained strings of fire.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eChambered for the \u003cstrong\u003e6mm ARC\u003c\/strong\u003e cartridge, this barrel features a \u003cstrong\u003e1:7.5\" twist\u003c\/strong\u003e rate optimized to stabilize modern high-BC projectiles. The barrel is configured for a \u003cstrong\u003erifle length\u003c\/strong\u003e gas system with a \u003cstrong\u003e.750\" gas journal diameter\u003c\/strong\u003e, and the muzzle is \u003cstrong\u003ethreaded\u003c\/strong\u003e and ready to accept your preferred muzzle brake, compensator, or suppressor mount.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eNo iron sights are installed, making this barrel an ideal foundation for a custom build paired with a free-float handguard and your choice of optic. Whether you are assembling a lightweight 6mm ARC hunting rifle, a precision DMR, or a suppressed tactical carbine, this Proof Research barrel delivers the accuracy, weight savings, and thermal performance that custom rifle builders demand.\u003c\/span\u003e\u003c\/p\u003e","brand":"Proof Research","offers":[{"title":"Default Title","offer_id":54998635348290,"sku":"126657","price":990.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_d660e7f6-c64d-4a85-a6ba-f0c4893d97d7.png?v=1784356905","url":"https:\/\/centerfiresystems.com\/products\/proof-research-ar-style-barrel-6mm-arc-16-1-7-5-twist-416r-stainless-carbon-fiber-rifle-length-threaded","provider":"Centerfire Systems","version":"1.0","type":"link"}