AR 15 Gun Parts Explained (Beginners Guide)

Published on July 28, 2021
Duration: 14:32

This beginner's guide to the AR-15 explains its basic components and operation. It clarifies that 'AR' stands for Armalite Rifle and details the common carbine configuration with a 16-inch barrel and collapsible stock. The video covers the gas impingement system, external controls like the bolt catch and safety lever, and the process of field stripping into upper and lower receivers. Essential internal parts like the bolt carrier group and buffer system are also highlighted, emphasizing the platform's modularity and basic maintenance.

Quick Summary

The AR-15 is a lightweight, semi-automatic rifle, with 'AR' standing for Armalite Rifle. The common carbine version has a 16-inch barrel and collapsible stock. It operates via a gas impingement system, cycling the bolt carrier group. The lower receiver is serialized, while the upper holds the barrel and BCG.

Chapters

  1. 00:00Introduction to the AR-15
  2. 01:13Standard Carbine Configuration
  3. 02:34Naming and History of the AR-15
  4. 03:16Gas Operating Systems Explained
  5. 05:30External Controls Walkthrough
  6. 07:30Forward Assist and Charging Handle
  7. 08:33Disassembly and Receivers
  8. 10:24Internal Components: BCG & Buffer
  9. 11:35Maintenance and Customization

Frequently Asked Questions

What does 'AR' stand for in AR-15?

The 'AR' in AR-15 stands for Armalite Rifle. It was originally designed by Eugene Stoner at the Armalite division of the Fairchild Aircraft Company, and does not mean 'assault rifle'.

What is the most common AR-15 configuration?

The most common configuration is the carbine, which typically features a 16-inch barrel and a collapsible buttstock. This design allows for adjustable length of pull and makes the rifle easier to store and maneuver.

How does the AR-15's gas system work?

The AR-15 primarily uses a direct impingement gas system. Gas from a fired round is tapped from the barrel and travels through a gas tube to cycle the bolt carrier group, loading the next round.

What are the main receivers on an AR-15?

An AR-15 has two main receivers: the lower receiver, which is the serialized firearm and contains the trigger group and stock, and the upper receiver, which houses the barrel, bolt carrier group, and charging handle.

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