What is the general purpose of guns? This depends on who holds them. Some people want to hold them to protect themselves and property. Whereas others want guns to advance onto and possess the property of another. This is completely clear in an international setting.
And sadly this is also at times true in disputes between neighbors. The laws, which have been worked out over hundreds of years, used to determine when possession becomes ownership are non-intuitive. Often both parties feel that they have the superior right to the land in dispute. FINE!
But, if your neighbor shows a weapon to you in an effort to intimidate, just get out of there … fast! Whatever the dispute is over is certainly not worth risking your life. Instead, get on the phone with your attorney. Allow any shooting match to happen in the courtroom.