[robertpaulsen]

"If a "right" only applies to someone operating entirely under the direction of the government"

It doesn't. The right is only protected by the second amendment when that person is acting as a member of the state Militia.

"In that light, name a single person who can buy (in their own name) an M4, and store it in their home (as their own)."

None that I'm aware of. There's a federal law against non-Militia members owning such weapons.

But why stop at the M4? What's wrong with an M249, M203, or even the M2?

[ctdonath2]

The right is only protected by the second amendment when that person is acting as a member of the state Militia.

At which point they are acting as an agent of the state, under state powers, and thus it's not a "right".

There's a federal law against non-Militia members owning such weapons.

So name a single militia member who owns an M4 (or any other post-'86 machinegun) in their own name.