Davidson Defense Premium Gas tube for carbine gas system AR15, M4 M4A1. Includes roll pin. Wilson Combat sets the standard for high quality parts. These replacement components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing worn or broken parts more importantly give your gun that more refined all black look along with a harder exterior finish that resists heat and retains its shape even under full auto conditions in extreme heat where other tubes may deform after they hit a higher heat range than a conventional gas tube will handle this tube will go just a little bit more.
Fit and finish of this gas tube is superb it also comes with a roll pin too. Rated for full auto fire !!!