AR-15 Upper vs Lower Receiver: What’s the Difference?
The AR-15’s modular design is built around two major components: the upper receiver and the lower receiver. This complete guide explains what each assembly does, the parts they contain, compatibility considerations, and why understanding the difference is essential for every AR-15 owner and collector.
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.
