The wave washers are worthless. I took the one off that was on my 1100 and replaced it with a one inch rubber ring 1/16" thick. It keeps
The forend nut from turning, but is easy to remove.
Don't get a thinner ring because it will get stuck in the
threads and make it harder to remove. If you still want a wave washer
you can have mine because I have no use for it. It
never would keep the forend nut from getting loose.