The Combat Tuna - FN FS2000

Published on April 8, 2026
Duration: 2:43

The FN FS2000, nicknamed the 'Combat Tuna,' is a bullpup rifle known for its extensive use of polymers and an innovative forward case ejection system designed for ambidextrous operation. While adopted by some militaries like Slovenia, it faced challenges in the US market and military sales due to its quirky design and difficult malfunction clearing. The integrated optic is considered functionally subpar, with flat-top versions being more practical. The rifle's design aims for ambidexterity, but the charging handle remains on the left side, posing an awkwardness for left-handed shooters. Its unique case ejection system, while preventing brass from hitting left-handed shooters, contributes to the difficulty in clearing malfunctions, often requiring full field stripping.

Quick Summary

The FN FS2000, nicknamed the 'Combat Tuna,' is a bullpup rifle notable for its polymer construction and forward case ejection system, designed for ambidextrous operation. However, it is often criticized for difficult malfunction clearing, a basic integrated optic, and a left-side-only charging handle, which contributed to its limited market success.

Chapters

  1. 00:01Introduction: The Combat Tuna (FS2000)
  2. 00:05Love for Bullpups & FS2000 Quirks
  3. 00:13Military Adoption & Awkwardness
  4. 00:24Polymer Construction & Market Performance
  5. 00:37Accessing the Action & Malfunction Clearing
  6. 00:56Integrated Optic vs. Flat-Top Versions
  7. 01:10Bullpup Concept & Ambidexterity Goals
  8. 01:27Forward Case Ejection System Explained
  9. 01:53Ambidextrous Selector Lever
  10. 02:04Magazine Release & Magazine Compatibility
  11. 02:15Gas System & Sling Flame Cutting Issue
  12. 02:27Charging Handle Awkwardness for Lefties
  13. 02:34Conclusion: A Neat Piece of History

Frequently Asked Questions

What is the FN FS2000's most distinctive feature?

The FN FS2000's most distinctive feature is its ability to eject spent casings out the front of the rifle. This is achieved through an internal riser and ejection chute system, designed to prevent brass from hitting left-handed shooters.

Why is the FN FS2000 considered awkward to operate?

The FN FS2000 is considered awkward due to several factors, including difficult malfunction clearing that often requires field stripping, a functionally limited integrated optic, and a charging handle that is only on the left side, posing a challenge for left-handed shooters.

What are the pros and cons of the FN FS2000's design?

Pros include its compact bullpup design, forward case ejection for ambidexterity, and ambidextrous selector lever. Cons are difficult malfunction clearing, a subpar integrated optic, proprietary magazine compatibility, and an awkward left-side charging handle.

Did the FN FS2000 achieve widespread military adoption?

While the FN FS2000 was adopted by some militaries, such as Slovenia, it did not achieve widespread global military sales or significant success in the US civilian market, largely due to its perceived awkwardness and design quirks.

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