Product Description The One Horse LLC OHBR02 is a 16-inch pistol-length gas M4 contour barrel chambered in 300 Blackout (300BO). Designed for AR-platform builds, this barrel combines a lightweight M4 contour profile with a pistol-length gas system to deliver reliable cycling and consistent performance with 300 Blackout ammunition. The black matte finish provides corrosion resistance and a clean, tactical appearance. Whether you are building a dedicated 300 Blackout rifle or upgrading an existing platform, the OHBR02 offers a dependable and well-engineered barrel solution at an accessible price point. Product Highlights 300 Blackout Chambering: Optimized for 300 Blackout cartridges, providing excellent versatility for both supersonic and subsonic loads. Pistol-Length Gas System: Pistol-length gas port placement promotes reliable cycling across a wide range of loads on AR-style platforms. M4 Contour Profile: The classic M4 contour keeps weight to a minimum while maintaining structural integrity and balance. 16-Inch Barrel Length: Delivers an ideal balance of velocity, maneuverability, and compliance for rifle-length configurations. Durable Black Finish: The protective black finish resists corrosion and wear for long-lasting performance in the field. Specs Brand: One Horse LLC Manufacturer Part Number (MPN): OHBR02 UPC: 850078799111 Caliber: 300 Blackout (300BO) Barrel Length: 16 inches Gas System: Pistol Length Barrel Profile: M4 Contour Finish: Black Platform Compatibility: AR-Style / M4 Platform 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. ]]>