The PROOF RESEARCH pre-fit carbon fiber barrels are expertly crafted for the Defiance Ruckus, offering a new standard in firearm customization with simplicity and precision. Designed for easy installation, these barrels require minimal specialized tools, making them suitable for both experienced gunsmiths and DIY enthusiasts. Each barrel is precisely chambered and threaded, allowing for effortless torqueing into place. A quick headspace verification with the appropriate Gauges is all that's needed to achieve exceptional accuracy and performance at the range. Enhance your shooting experience with the innovative technology of our Defiance Ruckus carbon fiber pre-fit barrels, where precision and innovation converge. Up to 64% lighter compared to traditional steel barrels with a similar contour Enhanced thermal resistance - optimized heat dissipation for cooler and more durable barrels The product exhibits exceptional durability, being encased in high-strength, aerospace-grade carbon fiber that is infused with a proprietary matrix resin Barrel twist rate - 1:8