Yankee Hill Machine Company 9mm Pistol Buffer Tube Assembly Features The Yankee Hill Machine 9mm Pistol Buffer Tube Assembly is manufactured to the specific dimensions required by 9mm pistol caliber AR platforms which differ from standard rifle caliber buffer tubes due to the blowback operating system these pistols typically use. Because a 9mm pistol relies on a heavier buffer and different buffer travel than a direct impingement rifle caliber build using a properly matched buffer tube is essential to reliable function and safe operation. This assembly provides builders with a correctly specified tube rather than forcing a mismatched rifle caliber component into service. A properly fitted buffer tube also ensures the brace or stabilizing device mounted to it sits securely and functions as intended. Yankee Hill Machine manufactures its buffer tube assemblies to close tolerances giving builders confidence that the component will mate correctly with compatible lower receivers and braces. Whether assembling a new 9mm pistol caliber build from scratch or replacing a damaged or incorrect buffer tube on an existing platform this assembly provides the correct foundation for that portion of the build. Pairing it with an appropriately weighted buffer and spring sold separately completes a reliable 9mm blowback system. The Yankee Hill Machine 9mm Pistol Buffer Tube Assembly is available for sale at GrabAGun for builders and owners working on a 9mm pistol caliber AR platform. Yankee Hill Machine Company 9mm Pistol Buffer Tube Assembly Specifications Manufacturer: Yankee Hill Machine Company Model: 9mm Pistol Buffer Tube Assembly Compatible Hosts: 9mm AR Pistol Platforms Available At: GrabAGun