I finally decided to take off my M4 style plastic handguards (which I love so dearly), and put on my Knights Armament rails. A two piece deal that should only require me to open the delta ring, pull off the plastic handguards, and replace with my rail system.
Only Problem is...
the delta ring side of the upper forearm won't close together with the bottom rail which appears to fit perfectly inside the delta ring. The inside of the top rails are a small metal channel which appears to mount and fit around the gas tube (with a screw to adjust the height on the T14 rail outside). It won't seem to close together to fit inside the delta ring. It won't close by about 1/8" and I don't want to break or bend the gas tube trying to manhandle it closed.
What the Hell?
ETA: I obviously removed the top screw to allow the gas tube to fit all the way at the top of the forearm.