Product DescriptionReplace a worn barrel or complete your next AR-15 build with the Diamondback DB Barrel in 5.56x45mm NATO. This 16-inch barrel is manufactured from durable 4150 chrome moly vanadium (CMV) steel and finished in black nitride for enhanced wear and corrosion resistance. A mid-length gas system and medium profile make it a versatile choice for balanced handling and reliable cycling on a wide range of AR-15 configurations.Product Highlights 16-inch AR-15 barrel chambered in 5.56x45mm NATO (also compatible with .223 Remington). 4150 chrome moly vanadium (CMV) steel construction for strength and longevity. Black nitride finish for improved corrosion resistance and reduced wear. Mid-length gas system with medium profile for a practical balance of recoil impulse and handling. Includes M4 feed ramps and 1/2x28 muzzle threads for common AR-15 muzzle devices.Specs Brand: Diamondback Product Type: AR-15 Barrel Caliber: 5.56x45mm NATO Barrel Length: 16 in Material: 4150 Chrome Moly Vanadium (CMV) steel Finish/Coating: Black Nitride Gas System Length: Mid-Length Profile: Medium Rifling Method: Button rifled Twist Rate: 1:8 Muzzle Threads: 1/2x28 Feed Ramps: M4 Approx. Weight: 1.90 lb Manufacturer Part Number: 556M16M50B8R UPC: 815875019077Disclaimer: 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.