The Proof Research 136683 Bolt .284 20" 1-8 Twist Carbon Fiber Barrel Blank brings Proof’s advanced barrel technology to precision rifle builders who demand lighter weight without sacrificing accuracy. Built around a match-grade 416R stainless steel core and wrapped in aerospace-grade carbon fiber, this non-threaded blank is engineered to deliver consistent performance shot after shot while dramatically reducing overall rifle weight.

This .284 caliber Sendero-contour blank is ideal for custom hunting and long-range builds where balance, heat management, and durability matter. The 20-inch length and 1-in-8 twist rate support a wide range of modern .284 projectiles, making it a strong choice for precision range work and demanding field use. Backed by Proof Research’s reputation for innovation in carbon fiber barrel construction, this blank offers a refined foundation for a premium rifle project.

• Manufacturer: Proof Research
• Model: 136683 Bolt .284 20" 1-8 Twist Carbon Fiber Barrel Blank
• Caliber: .284
• Barrel Length: 20"
• Twist Rate: 1-in-8
• Product Type: Accessory-Barrels
• Unique Features: Carbon Fiber Wrapped Stainless Steel Core, Non-Threaded Blank, Lightweight Sendero Contour