Proof Research Q Fix Carbon Pre-Fit Barrels 6.5CM 20in 8 Twist 5/8-24 Thread. Our truly innovative founders envisioned a company that would apply advanced science new technologies aerospace-grade materials and manufacturing excellence to produce a new class of products that would truly revolutionize the firearms industry. Our Q Fix Pre-Fit barrels exemplify our founders pursuit of relentless excellence. Our Q Fix Pre-Fit carbon fiber barrels are available in select calibers lengths and twists. Your Q Fix Pre-Fit barrel will arrive chambered and include the barrel extension for installation. Specifications for Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels: Manufacturer: Proof Research Color: Graphite/Silver Threads per Inch: 5/8x24 Gun Make: Q Gun Model: Q The Fix Gun Type: Rifle Flutes: No Condition: New Action Length: Short Action Features of Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels: Lightweight: Up to 64percent lighter than traditional steel barrels of similar contour Extreme Temperature Resistance: Improved heat dissipation for cooler and longer lasting barrels Unprecedented Durability: Wrapped with high-strength aerospace-grade carbon fiber impregnated with a proprietary matrix resin Package Contents: Proof Research Q Fix Carbon Pre-Fit Barrels What firearm models does the manufacturer say Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels is compatible with? The manufacturer says that Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels is compatible with Q The FixProof Research 114537: Q Fix Carbon Pre-Fit Barrels 6.5CM 20in 8 Twist 5/8-24 Thread