Product DescriptionFaxon Firearms Integral Rifle Barrels are built for shooters who want the maneuverability of a shorter overall setup while keeping the compatibility and versatility of an AR-15 build. The Integral Muzzle Device design helps prevent being locked into a single configuration or relying on a gunsmith to pin and weld a muzzle device. This Gunner-profile 5.56 NATO barrel supports full assembly and disassembly of the barrel and barrel nut, giving builders a flexible foundation for a reliable AR-15 upper.Product Highlights Integral muzzle device barrel design supports flexible AR-15 configurations without pin-and-weld dependency Gunner barrel profile balances strength and handling for all-around AR-15 builds 5.56 NATO chambering for common, widely available rifle ammunition Button-rifled barrel with 1:8 twist rate for versatile bullet stabilization 1/2x28 thread pattern for broad muzzle compatibility where applicableSpecs Brand: FAXON FIREARMS Manufacturer Part Number: 15A58M16NGQIMDF UPC: 816341025097 Firearm Fit: AR-15 Caliber: 5.56 NATO Barrel Length: 16 in Barrel Profile/Description: Gunner Barrel Material: Chrome Moly Steel Barrel Type: Button Rifled Twist Rate: 1:8 Diameter: 0.625 in Thread Pattern: 1/2x28 Weight: 1.35 lbDisclaimer: 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.