Colt Model 621: An Attempt at an AR-Style Export SAW

Published on October 20, 2022
Duration: 4:45

The Colt Model 621, an M16A1 HBAR LMG variant, was Colt's attempt to create an export SAW akin to the RPK. It features a 20-inch heavy barrel and an adapted M60 bipod. While retaining early M16A1 features like a teardrop forward assist, it never secured major contracts and is now a rare collector's item.

Quick Summary

The Colt Model 621 is a rare export variant of the M16A1 designed as a Light Machine Gun (LMG), featuring a 20-inch heavy barrel and an adapted M60 bipod. It aimed to compete in the export market but never secured major contracts, making it a highly sought-after collector's item.

Chapters

  1. 00:00Introduction: Colt M16A1 HBAR LMG (Model 621)
  2. 01:20Receiver Markings & Serial Number Details
  3. 02:11Barrel Specs & Early M16A1 Features
  4. 02:37M60 Bipod Adaptation Explained
  5. 03:54Market History, Rarity & Collector Value

Frequently Asked Questions

What was the purpose of the Colt Model 621?

The Colt Model 621 was an attempt by Colt to create a light machine gun (LMG) variant of the M16A1 rifle specifically for foreign export sales, aiming to compete in markets looking for support weapons similar to the Soviet RPK.

What are the key distinguishing features of the Colt Model 621?

It features a 20-inch heavy profile barrel (HBAR), an adapted M60 machine gun bipod, and retains early M16A1 characteristics like a teardrop forward assist. Its serial number falls within Colt's experimental/export range.

Is the Colt Model 621 a common firearm?

No, the Colt Model 621 is exceptionally rare. Despite Colt's efforts, it never secured significant military contracts, limiting production numbers. A few have surfaced as transferable NFA firearms for collectors.

What caliber does the Colt Model 621 fire?

The Colt Model 621 fires the 5.56mm caliber, consistent with its M16A1 origins. The receiver is explicitly marked 'COLT M16A1 CAL 5.56 MM'.

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