I had a similar problem the first time I reassembled my 10/22. There is something in the process that is counter-intuitive. I took it down and re-assembled as I watched a youtube video on the subject and it worked fine.
$0 of an NRA membership goes to legislative action or court battles. Not a dime. Only money contributed to the NRA-ILA or NRA-PVF.
Of course, you could just donate to the Second Amendment Foundation
I was feeling pretty good, then I looked around and realized I am not swimming or on fire.