The Christensen Arms 7mm Backcountry 20″ Carbon Fiber/Stainless Steel Pre‑Fit Barrel (model 810‑00152‑00/01) is a precision‑engineered rifle barrel designed for custom bolt‑action builds where lightweight performance and long‑range capability are priorities. Built around a match‑grade 416R stainless steel core wrapped in aerospace‑grade carbon fiber, this barrel uses Christensen’s proprietary carbon‑wrapping process to reduce weight while maintaining rigidity and consistent harmonics for improved accuracy. The 20″ length offers a balanced compromise between velocity and maneuverability — ideal for medium‑to‑long‑range hunting applications with the efficient 7mm Backcountry cartridge — and a 1:8″ twist rate provides reliable stabilization of a wide range of high‑ballistic‑coefficient bullets. Threaded at the muzzle with an included thread protector, the barrel is ready to accept brakes or suppressors once installed on a compatible Remington 700‑pattern action. With its combination of lightweight construction, proven materials, and match‑grade chambering, this pre‑fit barrel gives custom rifle builders a high‑performance foundation capable of delivering the accuracy and downrange performance that serious shooters expect.