Here is a great way to customize an Aero Survival Rifle! The TNW AR-15 Handguard Adapter is a front attachment for the Aero Survival Rifle that attaches to the barrel nut. It permits installation of the AR-15 handguard of the user's choice. The adapter comes with a second barrel nut, because installation of the adapter permanently attaches it to the existing barrel nut. The adapter is made of aluminum.