Right now I have the non-pistol/tactical stock that came on my LE model M4 . I ordered a fixed pistol grip stock, but I can’t get the pin to lock back in place at all. I’ve taken it off completely 3 times now, and the only way I can get the pin to lock back in place is if the pistol grip stock is extremely lose and wobbly/gap between the receiver and stock. I don’t have this issue with the stock that came on my gun. Is the pistol grip stock out of spec or something? I ordered from Botach, and if I’m still having issues I’m going to call them Monday.