Product DescriptionThe Noveske Stainless Lo-Pro DDF SPR Barrel is built for AR-15 shooters who want premium accuracy, dependable cycling, and top-tier barrel construction. Chambered in 5.56mm and crafted from 416R stainless steel, this 18 inch barrel features an Extra Thicc contour with disruptive deep fluting for a distinctive look and performance-focused design. It includes a hand-polished Noveske Proprietary Match chamber, extended hand-polished feed ramps, an M4 barrel extension, a pinned .936 inch low-profile gas block, and a rifle-length gas system. A 60-degree muzzle crown, 1/2x28 thread pitch, bead-blasted finish, and included headspaced bolt round out this high-performance barrel assembly.Product Highlights Precision-oriented 18 inch 5.56mm SPR barrel made from durable 416R stainless steel. 1:7 twist rate with Noveske Proprietary Match chamber for excellent compatibility with a wide range of bullet weights. Extra Thicc contour and disruptive deep fluting help deliver a rigid, premium barrel profile. Pinned .936 inch low-profile gas block and rifle-length gas system support reliable AR-15 operation. Includes a headspaced bolt for added convenience when building or upgrading a rifle. Specs Product Type: Rifle Barrel Brand: Noveske Model: Stainless Lo-Pro DDF SPR Barrel Caliber: 5.56mm Platform Fit: AR-15 Barrel Length: 18 inches Material: 416R Stainless Steel Twist Rate: 1:7 Contour: Extra Thicc Fluting: Disruptive Deep Fluting Chamber: Hand-Polished Noveske Proprietary Match Chamber Feed Ramps: Extended Hand-Polished Feed Ramps Barrel Extension: M4 Barrel Extension Gas System: Rifle-Length Gas Block: Pinned Low-Profile Gas Block, .936 inch Muzzle Crown: 60-Degree Thread Pitch: 1/2x28 Finish: Bead-Blasted Color: Silver Includes: Headspaced Bolt UPC: 840906144633 MPN: 07000563 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.