im trying to take my barrel nut off for the first time. man i have really cranked on that thing. put it in some clamps, used some pb blaster, put it in the freezer for a bit to shrink the aluminum, each time its the same, nada. i have the dpms wrench and all. anyone have any other suggestions? oh and i did try a hair dryer for a few minutes too. i can't get the blasted thing off!

