Building an AR-15: Complete Builder’s Parts List & Guide
Posted by Andrew Maas on Jul 30th 2024
Building an AR-15: A Builder’s Parts List & Complete Guide
Last updated: September 2025 • Author: Aerospace Arms
In this guide:
Introduction
AR-15 Build Considerations
Lower Receiver Parts List
Upper Receiver Parts List
Choosing an AR-15 Barrel
Bolt Carrier Group (BCG)
Gas System
Ha
…