Not an FX, but the Torque screws holding the rail on my Zbroia Hortitsia have stripped the head so that I cannot remove the rail to access the grub screws underneath that secure my barrel to the block. I need to remove the barrel to access the O-rings to check for a slow leak. I purchased an easy out kit on Amazon but have had zero luck getting the two stripped torque screws out. If I had a drill press, I could probably do it.