I think if one took the time to look they would find that Americans have ALWAYS owned the same kind of guns that their soldiers used when they were available to them. And if guns that were SUPERIOR to the ones used by the military, they owned those too.
There are two obvious qualifiers that are fatal:
"Always"?...perhaps, but not in recent decades.
"When available"?...perhaps, but not in recent decades.
Your second sentence -
And if guns that were SUPERIOR to the ones used by the military, they owned those too.
- is credible only if by "Superior" you mean in terms of quality.
Finally, when you state, "Americans have always owned..." you must be referring to the fact that some military-grade weapons are available for private ownership upon obtaining special permits and licenses and paying relatively exorbitant fees - rather than weapons readily available to the general public at market rates.
In the alternative, you perhaps mean "Americans have always owned" military-grade weapons on rare, illegal occasions.
But none of those thoughts seem pertinent to this thread.