Product DescriptionThe Faxon Firearms Big Gunner .308 Winchester 18-inch barrel is built to deliver a balanced blend of rigidity and handling for AR10/DPMS LR-308 pattern builds. Featuring Faxon's Big Gunner contour (medium taper behind the gas block with a slimmer forward taper), this barrel helps reduce front-end weight while maintaining the stability needed for high rates of fire and suppressor-host use. It's manufactured from duty-grade 4150 CMV steel and finished with salt bath nitride (QPQ) inside and out for excellent wear and corrosion resistance. A rifle-length gas system promotes a smooth recoil impulse, while the 11Adeg target crown and 1:10 twist are optimized for consistent .308 Win performance.Product Highlights Big Gunner (Gunner) profile balances strength behind the gas block with reduced forward weight for faster handling. 4150 CMV steel construction with salt bath nitride (QPQ) inside and out for long-lasting corrosion and wear resistance. Rifle-length gas system on an 18-inch .308 barrel for a smooth recoil impulse and reliable cycling. DPMS / LR-308 compatible extension with 5/8x24 muzzle threads for common .30-cal muzzle devices and suppressor mounts. Quality-focused build features include MPI inspection and an 11Adeg non-recessed target crown for consistent shot release.Specs Brand: Faxon Firearms Manufacturer Part Number: 10A810R18NGQ UPC: 816341023284 Caliber: .308 Winchester Barrel Length: 18 in Profile: Gunner (Big Gunner) Twist Rate: 1:10 Material: 4150 CMV steel Rifling: Standard button rifled Finish: Salt Bath Nitride (QPQ), inside & out Gas System Length: Rifle-length Gas Block Journal Diameter: 0.750 in Gas Block Journal Length: 1.9 in Muzzle Threads: 5/8x24 TPI Barrel Extension: DPMS / LR-308 compatible (black oxide) Crown: 11Adeg target crown (non-recessed) Inspection: Magnetic Particle Inspected (MPI) Weight: 2.13 lb Country of Manufacture: USADisclaimer: 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.