Sons Of Liberty Gun Works A5 Receiver Extension Features The Sons Of Liberty Gun Works A5 Receiver Extension is a factory OEM buffer tube built around the A5 length configuration used on Mil-Spec AR-15 lower receivers. Its 9 position adjustment range gives the shooter fine control over stock length of pull letting the rifle be tailored to body armor clothing layers or individual preference. A Black anodized finish protects the tube against wear from repeated stock adjustments and day to day handling. Built for AR-15 and AR-308 pattern lowers the extension fits a wide range of Mil-Spec builds using Universal buffer tube hardware. Because the A5 system runs on its own proprietary buffer and spring sold separately this receiver extension is intended as part of a complete A5 upgrade rather than a drop in replacement for a standard carbine buffer tube. Shooters building a new rifle or upgrading an existing AR-15 gain the option to fit the A5 system s distinct ergonomics and recoil characteristics once the matching buffer and spring are installed. The anodized Black finish matches most Mil-Spec AR builds without clashing with other components. This receiver extension is a solid foundation for any shooter planning an A5 length stock conversion. Sons Of Liberty Gun Works A5 Receiver Extension Specifications Manufacturer: Sons Of Liberty Gun Works Model: A5 Receiver Extension Type: Buffer Tube Color: Black Position: 9 Position Buffer Tube Type: Mil-Spec Compatible Hosts: AR-15 AR-308 Available At: GrabAGun