{"product_id":"barrel-blank-cf-224-22-snd","title":"Proof Research Carbon Fiber Barrel Blank .224 22\" Sendero Contour","description":"\u003cp\u003eThe Proof Research .224 caliber carbon fiber barrel blank delivers match-grade accuracy with significant weight reduction compared to all-steel barrels. This 22-inch blank features Proof's proprietary carbon fiber wrap around a precision-lapped stainless steel core, combining the thermal stability and rigidity of carbon fiber with the accuracy of a match-grade bore. The Sendero contour offers an optimal balance of stiffness and weight savings for precision rifle builds in .224 caliber chamberings like .223 Remington, 5.56 NATO, and .224 Valkyrie.\u003c\/p\u003e\u003cp\u003eThis is an unfinished barrel blank requiring chamber reaming, threading, crowning, and fitting by a qualified gunsmith. The carbon fiber construction dissipates heat efficiently during extended shooting sessions while maintaining a consistent point of impact. Proof Research barrels are known for sub-MOA accuracy potential when properly installed and paired with quality components. Each blank is manufactured in the USA using aerospace-grade carbon fiber and stainless steel.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbon fiber wrapped barrel blank, unfinished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e .224 (compatible with .223 Rem, 5.56 NATO, .224 Valkyrie, others)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 22 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContour:\u003c\/strong\u003e Sendero\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless steel core with carbon fiber wrap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Requires gunsmith fitting, chambering, threading, and crowning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Precision rifle builds, custom rifles, rebarrel projects\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Proof Research","offers":[{"title":"Default Title","offer_id":48449551925503,"sku":"PR103487","price":899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/blankcf637a_fa1995b0-c54a-490a-9635-25f6c6311402.jpg?v=1777263895","url":"https:\/\/doublestackstore.com\/products\/barrel-blank-cf-224-22-snd","provider":"Double Stack Store","version":"1.0","type":"link"}