Handy tool to have on the bench - AIM Sports AR15 Delta Ring Wrench Removal Tool

This tool locks into an empty lower receiver magazine well, and straddles the Delta Ring, allowing you to squeeze the two rods together, and pull down, disengaging the delta ring from the existing two-piece hand guard, and allowing installation of a new handguard as needed. The force-exertion rods are covers with a rubberized sleeve to protect your firearm, and are of a girthy, thickness that allows for good application of force. The only issue with using a tool like this, is that the tool can get in the way of removing the lower half of the hand guard, but with a little practice, this isn;t really a problem.