Sig AG 551 - The Tale of a Unicorn

Published on April 8, 2022
Duration: 30:05

This video provides an in-depth review of the rare Sig AG 551, often referred to as a 'unicorn' due to its limited production and import status. The presenter details its history, unique features like the long-stroke gas piston system and exceptional brass ejection, and compares it to AK and AR platforms. It covers the manual of arms, barrel specifics, sighting systems, handguard options, receiver types, stock, safety, trigger, and magazine compatibility, highlighting its Swiss engineering and high-quality construction.

Quick Summary

The Sig AG 551 is a rare Swiss battle rifle, often called a 'unicorn' due to its limited import numbers. It features a reliable long-stroke gas piston system, a reciprocating charging handle, and robust integrated diopter sights with tritium for low-light use. Its unique recoil impulse is noted for being exceptionally soft and straight-back.

Chapters

  1. 00:13Introduction to Switzerland and Firearms
  2. 00:41Introducing the Sig Sauer AG 551
  3. 02:21History of SIG AG and the 550 Series
  4. 03:42The Story of the 16-inch 551 Barrels and JDI Imports
  5. 05:06Sponsor Mentions and Channel Support
  6. 06:27Overview of the Sig AG 551
  7. 06:55Field Strip and Reliability
  8. 07:34Internal Mechanics: AK-like System
  9. 08:10Gas Piston System: Normal and Adverse Settings
  10. 08:48Brass Ejection Characteristics
  11. 09:40Recoil Impulse and Shooting Experience
  12. 11:04Manual of Arms: Magazine Release and Bolt Release
  13. 13:05The Unique 16-inch Barrel
  14. 14:03Muzzle Device and Suppressor Compatibility
  15. 16:22Barrel Quality and Full Auto Rating
  16. 16:51Sighting Systems: Diopter and Tritium
  17. 18:00Picatinny Rail Options
  18. 19:00Handguard Functionality and Aftermarket
  19. 20:55Receiver Types: Aluminum vs. Steel
  20. 21:21Side Folding Stock
  21. 22:10Ambidextrous Safety Selector
  22. 23:58Trigger Characteristics
  23. 25:07Flippable Trigger Guard
  24. 25:48Sealed System vs. AK
  25. 26:14Magazine Types and Availability
  26. 27:30Cost and Configuration Breakdown
  27. 28:27Final Thoughts and Conclusion

Frequently Asked Questions

What makes the Sig AG 551 a 'unicorn' firearm?

The Sig AG 551 is considered a 'unicorn' due to its extreme rarity in the US market. Only a limited number of these Swiss-made battle rifles were ever imported, making them highly sought after and valuable collector's items.

What is the operating system of the Sig AG 551?

The Sig AG 551 utilizes a long-stroke gas piston system, similar in principle to the AK-47. This system contributes to its reliability and provides a unique recoil impulse.

Can the Sig AG 551 accept a suppressor?

The specific 16-inch barrel variant of the Sig AG 551 featured in this video has an integrated muzzle device that is part of the barrel itself and is not designed for suppressor attachment. Modifying it is not recommended due to the firearm's rarity.

What are the sighting options on the Sig AG 551?

The Sig AG 551 typically comes with robust integrated diopter sights offering multiple range settings (200, 300, 400 meters) and tritium inserts for low-light conditions on both front and rear sights.

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