You have the positive right to bear arms. There is no counter (negative) right that states you can only bear certain arms.
Thats how the constitution works.
"Everything which is not forbidden is allowed" in English law, the core of the constitutional law and the philosphy of locke, which heavily influenced the writing of our Constitution. This is applied to the governed. Its 'flip side'..."everything which is not allowed is forbidden" is applied to the government. The Constitution is written to outline what the government can't do..not what you can. If there isn't anything saying its illegal...then its legal. There isn't anything anywhere that says 'you can only have shotguns'....so yeah..things like machinges (by the constitution) are legal.
so why aren't you faggots crying and protesting out in the streets bc your rights to own machine guns and artillery and bazookas are being infringed?