USED Proof Research Impact Precision Carbon Pre-Fit Threaded Barrels .300 Winchester Magnum 24in 1-10 Twist 5/8-24 Thread Long Action Sendero 5 Groove. These Rifle Barrels from Proof Research are crafted from high-strength aerospace-grade carbon fiber impregnated with a proprietary matrix resin creating an incredibly rugged structure that can handle your rifle's temperature and strong recoil. Without sacrificing heat dissipation capabilities the Proof Research Impact Precision Carbon Fiber Threaded Barrel works with your rifle to keep your temperature in check and extend its lifetime. Using a Proof Research Impact Precision Carbon/Steel Pre-Fit Barrel will decrease your swing weight by up to 64percent. Furthermore these barrels are incredibly durable and a great choice for a lightweight and cool barrel. Simply install this barrel ensure its headspace tolerances and head to the range for some of the best shots you've ever had with your rifle. For superior heat dissipation and superb durability look to the Proof Research Impact Precision Carbon Pre-Fit Threaded Barrels for your next modification. Specifications for Proof Research Impact Precision Pre-Fit Carbon Fiber Threaded Barrels: Manufacturer: Proof Research Barrel Profile: Sendero Threads per Inch: 5/8x24 Gun Make: Impact Precision Gun Model: Impact Precision 737 Gun Type: Rifle Flutes: No Action Length: Long Action Features of Proof Research Impact Precision 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 Impact Precision Carbon Pre-Fit Barrels What firearm models does the manufacturer say Proof Research Impact Precision Pre-Fit Carbon Fiber Threaded Barrels is compatible with? The manufacturer says that Proof Research Impact Precision Pre-Fit Carbon Fiber Threaded Barrels is compatible with Impact Precision 737Proof Research 130681: Impact Precision Carbon Pre-Fit Threaded Barrels .300 Winchester Magnum 24in 1-10 Twist 5/8-24 Thread Long Action Sendero 5 Groove