| Stag Arms Carbine Lower Receiver Extension Tube - 6 Position M-4 Stag Arms / Continental Machine Tool, Inc MIL-SPEC Carbine Lower Receiver Extension Tube often referred to as the carbine tube, stock tube, buffer tube, carbine buffer tube, carbine extension tube, or simply extension tube. There are two versions of the Carbine Receiver Extension Tubes; the MIL-SPEC version which has an outside diameter of 1.14 inches and the commercial Tube which has an outside diameter of 1.17 inches. When facing the side of the MIL-SPEC Lower Receiver Extension Tube the back forms a 90 degree angle (Flat Back); whereas most of the Commercial Lower Receiver Extension Tube forms a slight angle of 5 degrees inward toward the bottom of the tube. This angle also extends the overall length of the tube. There are other options available such as different number of stops. The wall thickness of the commercial version is thicker whereas the MIL-SPEC version offers more choices in stocks. The inside diameter of the tubes are the same. Cobra Tactical, Inc offers AR15 replacement components that are made to strict military specifications. All of the parts Cobra Tactical carries are of the highest quality so you know that you will have the reliability and excellent fit for you rifle you expect. These parts are for perfect for upgrading existing components or replacing worn or broken parts. |
