As others have already said, in order for you to own a machinegun it would have to have been manufactured AND registered with ATF's NFA Branch before...
Born/raised in one city
College in that same state
Free 24 year trip around the globe (all over the US, Germany, Korea, UK, and many "desert" nations) - courtesy of the US taxpayer via the USAF
And fate has me end up in Lawton - go figure!
Oh yeah - got to fly F-4s and F-15s along the way.