This document provides an overview of lesson two on self-defense firearms. It covers the four universal safety rules, how to clear different types of handguns, the different actions of handguns including revolvers, semi-automatics, and their firing mechanisms. It also discusses ammunition, common malfunctions, selecting the right firearm, and introduces home defense shotguns and the AR-15 platform. The key topics are treating all guns as loaded, never pointing at anything you don't intend to shoot, keeping your finger off the trigger until ready to fire, and being sure of your target and beyond.