Product DescriptionUpgrade your AR-15 with the Ballistic Advantage Premium Series 18" 6mm ARC SPR barrel, precision-machined from 416R stainless steel and finished with a durable bead-blasted surface. Built for consistent accuracy and reliable feeding, it features a Nickel Boron coated extended M4 feed ramp extension and an SPR barrel profile suited for precision-focused builds. The barrel is factory threaded 5/8x24 and is configured with a mid-length gas system and 1:7 twist rate to support modern 6mm ARC performance.Product HighlightsPremium Series 18" 6mm ARC SPR-profile barrel for AR-15 platform builds416R stainless steel construction with a bead-blasted stainless finishNickel Boron coated extended M4 feed ramp extension for smooth, dependable feeding5/8x24 muzzle threads for compatibility with common 6mm/.30-caliber muzzle devices and suppressor mounts1:7 twist rate with a mid-length gas system for balanced performance and reliable cyclingSpecsBrand: Ballistic AdvantageSeries: Premium SeriesCaliber: 6mm ARCBarrel Length: 18"Profile: SPRMaterial: 416R Stainless SteelFinish: Bead Blasted Stainless (Silver)Muzzle Thread: 5/8x24Twist Rate: 1:7Gas System Length: Mid-LengthFeed Ramp Extension: Extended M4, Nickel Boron coatedCompatibility: Fits AR-15Manufacturer Part Number: BABL6MM002PUPC: 819747028631Disclaimer: 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.