While I agree with Quigley that widespread ownership of firearms made/makes authoritarian government difficult, in this statement Prof Quigley omits some of the most important events in European History:The medieval period in which the best weapon was usually a mounted knight on horseback (clearly a specialist weapon) was a period of minority rule and authoritarian government. Even when the medieval knight was made obsolete (along with his stone castle) by the invention of gunpowder and the appearance of firearms, these new weapons were so expensive and so difficult to use (until 1800) that minority rule and authoritarian government continued
Battle of Morgarten 1315
Battle of Sempach 1386
BritannicaThe Battle of Sempach showed that an army of Swiss eidgenossen (“oath brothers”) armed primarily with the pike could defeat chivalric elites in the open field, whether mounted or dismounted.
Battle of Näfels 1388 400 Swiss counterattacked an Austrian army of 6,500, routing the Austrians
etc...
In each battle the organized Swiss Militia massacred professional soldiers/knights using either mountainous terrain or their personal weapons to their advantage:
[An] important and enduring discovery was made by the Swiss [at this battle. They] learned that an unarmoured man with a seven-foot (-2.14m) halberd could dispatch an armoured man-at-arms. Displaying striking adaptability, they replaced some of their halberds with the pike, an 18-foot spear with a small, piercing head. No longer outreached by the knight’s lance, and displaying far greater cohesion than any knightly army, the Swiss soon showed that they could defeat armoured men-at-arms, mounted or dismounted, given anything like even numbers. With the creation of the pike square tactical formation, the Swiss provided the model for the modern infantry regiment.