Want to really thank all you guys for helping me out. I'm new to this collecting and since this gun is so important to me, I don't want to screw it up. I would like to remove the stock and clean it up. There's lots of grim and dirt on it. I have attached pictures of the what I call the retaining ring on the front, which I'm sure is not the correct term.

What size is that nut? I don't have an wrenches that fit it. Also, there are several Youtube video on removing the stock but most of them have the bayonet clip, which mine does not.

thanks
Steve