Product DescriptionUpgrade your .308 Winchester build with the Ballistic Advantage Modern Series 20 inch Heavy Profile barrel, designed for DPMS style platforms. This barrel is machined from 4150 Chrome Moly Vanadium steel and finished with a QPQ corrosion resistant treatment for durability in demanding conditions. It also features a QPQ coated M4 feed ramp extension to help promote reliable feeding, along with a rifle-length gas system and a 1:10 twist rate that supports a wide range of .308 bullet weights.Product Highlights Modern Series .308 Winchester barrel built for DPMS style compatibility 4150 Chrome Moly Vanadium steel construction for strength and longevity QPQ corrosion resistant finish for enhanced wear and rust protection Heavy profile and 20 inch length for stability and heat management Rifle-length gas system with 1:10 twist for balanced cycling and versatilitySpecs Brand: Ballistic Advantage Series: Modern Series Caliber: .308 Winchester Barrel Length: 20 in Profile: Heavy Material: 4150 Chrome Moly Vanadium steel Finish: QPQ corrosion resistant finish Gas System Length: Rifle-length Twist Rate: 1:10 Feed Ramps: QPQ coated M4 feed ramp extension Platform/Compatibility: DPMS style UPC: 819747023674 Manufacturer Part Number: BABL308006MDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.