Long JP Thermal Dissipator™ for 308 JP Supermatch barrels, long, black. Fits JP 22″ 308 barrel. Can be used on any barrel with .750 contour under hand guard.
Compatibility notice: Note that the JP Thermal-Dissipater™ is designed specifically as a JP Supermatch™ barrel accessory and will not fit most other barrels unless they have exactly the contour and interface length necessary. Most non-JP barrels will need to be re-contoured to incorporate the JP Thermal-Dissipater™.