EVERY Part of an AR 15 Explained

Introduction

This tutorial provides a comprehensive overview of the individual components of an AR-15 rifle, detailing their functions without delving into assembly or modification. Understanding these components is essential for anyone interested in firearms, whether for educational purposes, safety, or general knowledge.

Step 1: Upper Receiver

• The upper receiver houses the bolt carrier group and is crucial for the cycling of the rifle.
• It includes:
  • Ejection port: Allows spent cartridges to exit after firing.
  • Charging handle: Used to manually cycle the action.
  • Forward assist: Helps ensure the bolt is fully locked.

Step 2: Lower Receiver

• The lower receiver is the part of the firearm that is legally considered the "firearm."
• Key features include:
  • Trigger mechanism: Controls the firing of the rifle.
  • Pistol grip: Provides a hold for the shooter.
  • Magazine well: Where the magazine is inserted.

Step 3: Bolt Carrier Group

• This assembly is responsible for the chambering, firing, and ejection of cartridges.
• Components include:
  • Bolt: Locks into the chamber to fire the round.
  • Firing pin: Strikes the primer to ignite the cartridge.
  • Cam pin: Connects the bolt to the carrier and allows it to rotate.

Step 4: Handguard

• The handguard protects the shooter's hands from heat generated during firing.
• It also allows for the attachment of accessories like lights or grips.
• Types include:
  • Standard: Basic protection.
  • Rail systems: Offer more customization options.

Step 5: Stock

• The stock provides stability and support for aiming.
• Types include:
  • Fixed stock: Non-adjustable.
  • Adjustable stock: Can be modified for length and comfort.

Step 6: Barrel

• The barrel is where the bullet travels after being fired.
• Key considerations:
  • Length: Affects accuracy and velocity.
  • Twist rate: Determines how the bullet stabilizes in flight.

Step 7: Sights

• Sights are essential for aiming the rifle accurately.
• Types include:
  • Iron sights: Basic, mechanical sights.
  • Optics: Include scopes or red dot sights for enhanced accuracy.

Conclusion

Understanding each component of the AR-15 is crucial for safe handling and effective use. This guide has covered the major parts, including the upper and lower receivers, bolt carrier group, handguard, stock, barrel, and sights. For next steps, consider further research on firearm safety, maintenance, and shooting techniques to enhance your knowledge and skills in handling firearms responsibly.