Colt 601: The AR-15 Becomes a Military Rifle

Published on December 25, 2025
Duration: 0:59

This entry details the Colt Model 601, an early AR-15 variant preceding the XM16, as presented by Ian McCollum of Forgotten Weapons. It highlights unique features like green fiberglass furniture, a three-prong flash hider, and a slab-side receiver, contrasting it with later military iterations. The information is presented with expert historical analysis and detailed visual examination.

Quick Summary

The Colt Model 601 is a rare early AR-15 variant that preceded the XM16, featuring unique elements like green fiberglass furniture, a three-prong flash hider, and a flat-sided receiver without a forward assist. These characteristics highlight its transitional role in the rifle's military development.

Chapters

  1. 00:00Introduction to the Colt Model 601
  2. 00:11Selector Settings and Production History
  3. 00:22External Features and Furniture
  4. 00:35Receiver and Bolt Carrier Details

Frequently Asked Questions

What distinguishes the Colt Model 601 from later AR-15 variants?

The Colt Model 601, an early AR-15 precursor to the XM16, is distinguished by its green fiberglass furniture, a three-prong flash hider, and a flat-sided receiver lacking a forward assist and brass deflector, unlike its successors.

What was the significance of the Colt Model 601 in AR-15 history?

The Colt Model 601 represents a crucial early stage in the AR-15's development and military adoption, showcasing design elements that were refined in subsequent models like the XM16 and M16, ultimately shaping the iconic rifle.

What are some key visual features of the Colt Model 601?

Key visual features of the Colt Model 601 include its triangular charging handle, distinctive green two-piece fiberglass handguards, an open three-prong flash hider, and a flat-sided receiver without a forward assist or brass deflector.

Who presented the information on the Colt Model 601?

The information on the Colt Model 601 was presented by Ian McCollum, an expert known for his detailed historical analysis of firearms on the Forgotten Weapons channel.

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