The WMD 9mm 16.5" Nitromet Barrel is engineered for precision and performance in your AR-15 platform. This barrel features a 1:10 twist rate and a 1/2X28 thread pitch, making it ideal for a variety of 9mm applications. The black nitride finish not only enhances durability but also provides excellent corrosion resistance. Weighing just 1.8438 lbs, this barrel is designed for optimal balance and handling. Upgrade your firearm with a barrel that reflects expert craftsmanship and innovative technology, perfect for those who demand reliability and accuracy in every shot.