Product Description The LBE Unlimited BAR145M is a cold hammer forged AR-15 replacement barrel chambered in 5.56x45mm NATO with a 14.5-inch length. Built from steel and finished in a durable black nitride/melonite treatment, it is designed to deliver long-lasting wear and corrosion resistance while maintaining consistent performance. The barrel is threaded 1/2x28 for compatibility with many common muzzle devices and is intended to fit AR-15/AR-platform rifles. Product Highlights 14.5-inch 5.56x45mm NATO AR-15 replacement barrel for AR-platform builds and upgrades Cold hammer forged construction for strength, longevity, and consistent rifling Black nitride/melonite finish for enhanced corrosion resistance and reduced wear 1/2x28 threaded muzzle to accept a wide range of AR-15 muzzle devices Rifled bore with 1:7 twist rate to support a broad range of 5.56 NATO loads Specs Brand: LBE Unlimited Manufacturer Part Number: BAR145M UPC: 706612408288 Type: AR-15 replacement rifle barrel Caliber: 5.56x45mm NATO Barrel Length: 14.50 in Bore Type: Rifled Twist Rate: 1:7 Gas System Length: Mid-length Muzzle Threads: 1/2x28 Material: Steel Finish: Black Nitride / Melonite Color: Black Firearm Fit: AR-15 / AR-Platform Item Weight: 1.88 lb (approx.) 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 products manufacturer.