The AR-15/M4 handguard removal tool makes the removal of your stock 2-piece USGI handguards fast and easy. How does it work? AR-15/M4 handguard removal tool fits around the delta ring and hooks into the empty magwell on the lower receiver, and it is simply pulled back and down against the delta ring to allow the handguards to be easily removed or installed with one hand. This handguard removal tool is made from one piece of steel and coated to protect the finish.