How hard was it to loosen and remove the nut inside the receiver to remove your folding stock?
Mine was pretty easy, just need a large enough screwdriver to fit in the nut at the end. I've heard a few folks had trouble as they spray on finish was also sprayed on the screw and then "screwed in", making it a bugger to remove. Some folks used a heat gun, hair dryer, penetrating oil, hammer/chisel/vise to break it loose. Mine came loose with a good twist of a large screwdriver (3/8" wide I believe).

