Ruger mini 30? and Barret .50 BMG semi auto?

does ruger still make the mini 30? is there anyway to get a pre ban mini 30? also i saw the new Rambo movie in the theater and one of the mercinaries i beileve was shooting the new barret .50bmg semi auto? it looked just like the on the guy on future weapons shot the water melon with. where to get one of those? they are legal to own in my state, money is not and issue, recoil is but maybe i wont ever shoot it?