It started off as a letter, but for former Marine Joshua Boston it was more than that. It was about his freedom.

The Afghanistan veteran wrote an open letter to U.S. Sen. Dianne Feinstein, D-California, saying that he would not register his weapons with the government even if a ban on assault weapons is passed. The letter started on CNN iReport and gained mass attention online, obtaining a quarter-million views as of Friday evening and appearing on several other news outlets.

Boston said he was inspired to send in the iReport because he felt as though some gun owners were being unfairly targeted. He is angered by "the fact that I'm supposed to be punished for doing nothing more than owning a rifle that looks scary because its stock isn't made out of wood," he said.