Product DescriptionThe Noveske SPR barrel is built for shooters who want match-grade precision, dependable reliability, and premium construction in an AR-15 platform. Chambered in 5.56 NATO and cut from 416R stainless steel, this 18 inch barrel features a 1:7 twist rate, Noveske&';s proprietary hand-polished match chamber, extended hand-polished feed ramps, and an M4 barrel extension for smooth function. Its Extra Thicc contour and disruptive deep fluting help balance rigidity and performance, while the pinned .936 inch low-profile gas block and rifle-length gas system support consistent cycling. Additional details such as the 1/2x28 thread pitch, bead-blasted finish, and 60-degree muzzle crown round out a premium barrel designed for accuracy-focused builds.Product Highlights Premium 416R stainless steel 18 inch AR-15 barrel chambered in 5.56 NATO for precision-oriented rifle builds 1:7 twist rate with Noveske proprietary hand-polished match chamber for excellent stabilization and refined accuracy Extra Thicc contour with disruptive deep fluting for enhanced rigidity and a distinctive performance-driven profile Pinned .936 inch low-profile gas block and rifle-length gas system for dependable operation and clean fit under handguards Includes M4 barrel extension, extended polished feed ramps, 1/2x28 muzzle threads, bead-blasted finish, and 60-degree crown Specs Brand: Noveske Manufacturer Part Number: 07000562 UPC: 840906144626 Product Type: Rifle Barrel Platform Compatibility: AR-15 Caliber: 5.56 NATO Barrel Length: 18 in Material: 416R Stainless Steel Finish: Bead-Blasted Color: Silver Twist Rate: 1:7 Contour: Extra Thicc Fluting: Disruptive Deep Fluting Gas System: Rifle-Length Gas Block: Pinned .936 in Low-Profile Gas Block Chamber: Hand-Polished Noveske Proprietary Match Chamber Feed Ramps: Extended Hand-Polished Feed Ramps Barrel Extension: M4 Barrel Extension Thread Pitch: 1/2x28 Muzzle Crown: 60 Degree Disclaimer: 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.