Leaving all legal questions aside for the moment, how does the M4 LE 11707 pistol grip stock remove? Based on the schematic on p.18 in spare parts manual, I've removed the recoil pad & stock retaining nut (which was super tight on every turn). Next in line is the stock retaining piece, which appears to be threaded itself. The question is do I just rotate the whole stock while someone else holds the receiver (with unloaded gun, of course)? I've put a good bit of torque on it already & it doesn't budge.
