YES THEY ARE!!! THE 2nd amendment never stated what types of firearms that US Citizens would be limited to. It was only after the federal government, about 10 years ago, violated the US Constitution by banning automatic weapons. The 2nd amendment also allows for the formation of militias. How the hell are US citizens supposed to form a formidable militia if they can't own automatic or semi-automatic weapons, let alone other weaponry? The US government has purposely violated the 2nd amendment in order to rid Americans of their 2nd amendment right to bear arms, as well as form militias. The federal government wants total and complete domination over the people. But since you are a Marine, god forbid an employee of the federal government would listen to reason---as well as actually read the very same US Constitution that he was sworn to uphold and protect.
P.S.---The federal government is scared shitless of US citizens being able to form a formidable militia, because then it would keep their asses' in check, such as keeping them from creating such nonsense as the Patriot Act, which is being used to destroy even more Constitutional rights under the disguise of fighting terrorism.