How the AR-15 Works: Understanding the Operating System

Curious how the AR-15 works? This complete guide explains the AR-15 operating system, including the upper and lower receiver, gas system, bolt carrier group, buffer system, and other major components that make the platform so popular.
AR-15 Parts Explained: A Complete Guide to Every Major Component

Understanding AR-15 parts is essential for every rifle owner. This complete guide explains every major component, how it contributes to the rifle, common upgrade options, and tips for maintaining your AR-15.