Ok, I purchased that rock river a few weeks ago with the half quad rail, Well my question is how the hell do I get this half quad off. I removed the gas block, but I am completely stumped as to what I need to do next. I think I may need a special tool? Any help would be appreciated as I have googled, youtubed and searched, but have not come up with a complete step by step of how to remove a free float. thanks in advance!