The second amendment to the constitution of the United States reads as such:
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.
Until well into the 19th century, firearms did not have much individual use. The effectiveness of firearms was only truly realized in large groups performing highly disciplined fire drills, hence the reference to a well regulated militia. A militia had to act like clockwork, and had to come upon the battlefield with sufficient drill experience, hence the need for it to bear arms in peacetime.
What the second amendment recognized was the critical value of organization in the defense of of the people, for which the right to bear arms was recognized. The reality, when it comes to war, is that arms are simple to acquire, but organization is complicated to establish. Any sufficiently organized mob can seize the weapons stockpile of a state, and so the state has an interest in keeping the people as disorganized and isolated as possible.
The same principle applies to the other use for firearms, protection from petty crime. While a single armed homeowner can scare off a thief, an armed gang can easily outgun him and rob him unless he can call for assistance from a militia. (A function that is today known as police and is a state-owned monopoly.)
How does the right to bear arms factor into a liberation strategy? It is relatively unimportant compared to the need to organize militias for mutual protection, even if these militias have nothing more than home gardening tools as arms. Should they ever face an enemy who bears weapons that outclass the militia, weapons that counter these can easily be purchased and smuggled, but in order for this to be done the militia needs to have a structure that can employ these weapons.
This should be another short-term goal for Libertarian: organizing volunteer neighbors into a system where they can deploy large numbers for mutual protection. If this is done, the community will become much less dependent on the state and more receptive to Libertarian ideas. This should not officially involve firearms in order to stay under the radar and not attract a confrontation with the state. Firearms should remain a hobby.