From the Vault: Colt Model 601 Rifle

Published on July 19, 2019
Duration: 7:39

This guide details how to identify key features of the Colt Model 601, the first M16 variant adopted by the US military. It covers distinctive characteristics such as the 'no fence' lower receiver, triangle charging handle, duckbill flash hider, and green fiberglass furniture. The information is presented with high authority by Brownells representatives, recognized experts in firearm history and components.

Quick Summary

The Colt Model 601, the first M16 variant adopted by the U.S. military, features distinctive characteristics like green fiberglass furniture, a triangle charging handle, a 'no fence' lower receiver, and a duckbill flash hider. Brownells experts highlight these early design elements, noting the absence of a forward assist and shell deflector, and mention the availability of replica parts like waffle magazines.

Chapters

  1. 00:00Introduction to Colt Model 601
  2. 00:51Unique Features and Waffle Magazine
  3. 01:15Front Sight and Barrel Specs
  4. 01:49Handguards and Slip Ring
  5. 02:21Charging Handle and Bolt Carrier
  6. 02:44Ejection Port and Receiver Details
  7. 03:45Bolt Catch and Buffer Tube
  8. 04:31Stock and Receiver Profile
  9. 04:51Lower Receiver 'Fence' Evolution
  10. 05:41Markings and Rear Sight
  11. 06:31Duckbill Flash Hider
  12. 07:05Select-Fire Status and Conclusion

Frequently Asked Questions

What makes the Colt Model 601 historically significant?

The Colt Model 601 is historically significant as it was the very first M16 variant adopted by the U.S. military, specifically the Air Force, around 1960. It represents a crucial early stage in the development of the AR-15 platform for military use.

What are the distinctive visual features of the Colt Model 601?

Key visual identifiers include green-painted fiberglass handguards, a triangle-shaped charging handle, a 'no fence' lower receiver without a raised barrier around the magazine release, and a three-pronged 'duckbill' flash hider. It also lacks a forward assist and shell deflector.

Where can I find replica parts for the Colt Model 601?

Brownells offers replica parts, such as the classic waffle magazine, for enthusiasts looking to restore or maintain the historical accuracy of their Colt Model 601 or similar early AR-15 variants.

What is the barrel twist rate on a Colt Model 601?

The Colt Model 601 is equipped with a barrel featuring a 1:14 twist rate. This specification is characteristic of early 5.56mm firearms and influences projectile stability.

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