This AR-15 Delta Ring Tool / Wrench makes removal of your stock 2-piece hand guard fast and easy. The AR-15 / M16 Handguard Removal Tool fit around the delta ring and steel rods are coated with rubber to protect the firearms finish. The tool Polymer base end cap hooks into the empty mag well on the lower and is pulled down against the delta ring to allow the handguard to be easily removed or installed with one hand. Works with AR-15, M16, M4 and Car-15 style rifles with standard 2-piece handguard.