Product DescriptionThe JE Machine Tech AR-15 barrel is built for 9mm platforms and delivers a compact 8.5 inch configuration suited for pistol builds, compact carbines, and custom AR-pattern projects. Made from durable 4150 chrome moly steel and finished in black nitride, this barrel is designed for strength, corrosion resistance, and long-term performance. Its medium profile balances durability and handling, while the 1:10 twist rate is optimized for 9mm use. The threaded 1/2x36 muzzle pattern adds compatibility for appropriate muzzle devices and accessories.Product Highlights 8.5 inch AR-15 compatible 9mm barrel for compact firearm builds Constructed from 4150 chrome moly steel for dependable strength and service life Black nitride finish helps resist wear and corrosion in demanding conditions Medium profile design offers a practical balance of rigidity and weight 1:10 twist rate and 1/2x36 thread pattern support common 9mm AR applications Specs Brand: JE Machine Tech Manufacturer Part Number: PS-BAL24 UPC: 811577035742 Product Type: AR-15 Barrel Caliber: 9mm Barrel Length: 8.5 in Barrel Material: 4150 Chrome Moly Steel Finish: Black Nitride Barrel Profile: Medium Profile Twist Rate: 1:10 Thread Pattern: 1/2x36 Weight: 1.075 lb 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.