The Original AR-15: Serial Number 6 in Original Configuration

Published on November 1, 2025
Duration: 17:53

This review details AR-15 serial number 6, a rare original configuration prototype from the Springfield Armory National Historic Site. It explores the AR-15's lineage from Project Salvo and its development from the AR-10, highlighting key design features like the original 25-round straight magazine and top-mounted charging handle. The video contrasts early prototype elements with later modifications made after military trials, such as the rear charging handle and 20-round magazine.

Quick Summary

AR-15 serial number 000006 is a rare original configuration prototype, representing the early evolution of the design. It originated from Project Salvo and met 1957 Army requirements for a lightweight rifle, featuring a 25-round straight magazine and top-mounted charging handle.

Chapters

  1. 00:00Introduction: AR-15 Serial Number 6
  2. 00:40Project Salvo & Small Caliber Research
  3. 02:09Army Requirements for a Light Rifle
  4. 03:16Scaling the AR-10 to the AR-15
  5. 06:45Prototype Features & External Components
  6. 13:08Military Trials & Design Evolution

Frequently Asked Questions

What is significant about AR-15 serial number 6?

AR-15 serial number 000006 is highly significant as it's believed to be one of the few, if not the only, surviving examples of the original AR-15 batch in its complete, as-manufactured configuration, offering a unique historical perspective.

What were the origins of the AR-15 project?

The AR-15 project originated from the 1955 Army experiment known as Project Salvo, which aimed to improve hit probability by exploring small-caliber, high-velocity cartridges and lighter rifle designs.

What were the key requirements for the early AR-15?

In 1957, the Army required a select-fire rifle weighing no more than 6 pounds, chambered in .22 caliber, with terminal ballistics matching the M1 Carbine and the ability to penetrate a steel helmet at 500 yards.

What were some unique features of the AR-15 prototype?

Early AR-15 prototypes, like serial number 6, featured a 25-round straight magazine, a top-mounted charging handle integrated into the carry handle, and a thin pencil-profile barrel without a flash hider.

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