Whether you are building your first lower receiver from scratch, performing a deep clean, or upgrading components, understanding the anatomy of the rifle is essential. This article serves as your comprehensive , breaking down every single component into the Upper Receiver Group and the Lower Receiver Group.
. A detailed parts list diagram typically breaks these down into smaller sub-assemblies for maintenance or building. Core AR-15 Components Ar 15 Parts List Diagram
The AR-15 is a modular, gas-operated, magazine-fed semi-automatic rifle with over 80 standardized parts organized into two main receiver groups. Understanding the is essential for maintenance, customization, troubleshooting, and legal compliance. The platform’s design allows users to replace nearly every component with aftermarket options, making it one of the most adaptable firearm systems in existence. Whether you are building your first lower receiver
Searching for an often leads to confusing, low-resolution images or incomplete lists. This guide serves as your definitive resource. Below, we break down the rifle into three primary assemblies (Upper Receiver, Lower Receiver, and Bolt Carrier Group) and provide a detailed, text-based diagram plus a functional checklist for your build. A detailed parts list diagram typically breaks these
