2009 Called, They Want The SR-556 Back

Published on May 23, 2025
Duration: 8:57

This review examines the Ruger SR-556, a 2009 attempt at a service rifle, highlighting its short-stroke piston system, 1:9 twist barrel, and front-heavy design. Despite its $2,000 price point and failure to secure military contracts, the SR-556 is considered a better rifle than the Bushmaster ACR by the reviewer, primarily due to its softer shooting characteristics on the lowest gas setting and more robust accessory mounting options. However, its high cost and lack of a dedicated suppressed setting are noted drawbacks.

Quick Summary

The Ruger SR-556 was an 8lb, $2,000 short-stroke piston AR-15 rifle introduced in 2009, aiming for military contracts but ultimately discontinued. It featured a 1:9 twist barrel and a three-setting gas block, with the lowest setting offering a soft shooting experience. Despite its drawbacks, it was deemed superior to the Bushmaster ACR by the reviewer.

Chapters

  1. 01:06Introduction to the Ruger SR-556
  2. 01:23SR-556 History and Discontinuation
  3. 01:43SR-556 Model Specifics
  4. 01:58Quad Rail and Gas Block
  5. 02:08Barrel Specifications
  6. 02:18Bolt Carrier Group (BCG) Analysis
  7. 02:53Upper Receiver and Handguard Mount
  8. 03:13Lower Receiver Upgrades
  9. 03:30Trigger Performance
  10. 03:42Weight and Balance
  11. 03:56SR-556 vs. Bushmaster ACR Comparison
  12. 04:35Piston System Performance
  13. 05:00Suppressed Shooting Experience
  14. 05:27Shooting Impressions
  15. 05:58Accuracy Assessment
  16. 06:35Reasons for Poor Sales
  17. 07:18Design Philosophy and Iconic Status
  18. 08:15Final Verdict and Value

Frequently Asked Questions

What was the Ruger SR-556 and why was it developed?

The Ruger SR-556 was an 8lb, $2,000 short-stroke piston AR-15 rifle introduced in 2009. It was developed as an attempt to secure military contracts for a modern service rifle, competing with other designs of the era.

How did the Ruger SR-556 perform in trials and on the civilian market?

The SR-556 failed to entice military buyers and also struggled to gain traction with civilian consumers due to its high price point. The project was eventually discontinued after several revisions, as Ruger couldn't justify the cost for the perceived value.

What are the key features of the Ruger SR-556's piston system?

The SR-556 utilizes a short-stroke piston system with three gas settings. The lowest setting is noted for providing a soft and properly tuned shooting experience when unsuppressed, though it lacks a dedicated suppressed setting.

How does the Ruger SR-556 compare to the Bushmaster ACR?

The reviewer considers the Ruger SR-556 to be a better rifle than the Bushmaster ACR. While both were 2009 service rifle contenders, the SR-556 is lighter, offers better accessory mounting with its quad rail, and has a more refined piston system, especially on its lowest setting.

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