{"product_id":"prefit-barrel-q-fix-308win-18","title":"Proof Research Prefit Barrel Q Fix 308 Win 18\" – Carbon Fiber Match-Grade Barrel","description":"\u003cp\u003eThe Proof Research Prefit Barrel for the Q Fix chambered in 308 Winchester with an 18-inch profile delivers match-grade accuracy in a lightweight carbon fiber construction. Designed as a drop-in replacement for Q Fix bolt-action rifles, this barrel combines Proof's aerospace-grade carbon fiber wrap with a match-grade stainless steel core for exceptional rigidity, heat dissipation, and shot-to-shot consistency. The 18-inch length balances velocity retention with maneuverability for tactical applications, hunting, and precision rifle work.\u003c\/p\u003e\u003cp\u003eThis prefit barrel requires no gunsmithing for installation on Q Fix actions and features a precision chamber cut to SAAMI specifications. The carbon fiber wrap significantly reduces weight compared to traditional steel barrels while maintaining or improving accuracy and barrel life. Proof Research manufactures these barrels using their proprietary layup process with continuous fiber wrapping for maximum strength-to-weight performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Prefit barrel assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e Q Fix bolt-action rifles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChambering:\u003c\/strong\u003e 308 Winchester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Match-grade stainless steel core with carbon fiber wrap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Carbon fiber exterior\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-in prefit, no gunsmith required\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Proof Research","offers":[{"title":"Default Title","offer_id":48449706262783,"sku":"PR114513","price":1114.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/qfixbarrel_9c5ca94d-2642-4e75-9d87-0cb6ff0ae986.png?v=1777264568","url":"https:\/\/doublestackstore.com\/products\/prefit-barrel-q-fix-308win-18","provider":"Double Stack Store","version":"1.0","type":"link"}