Anderson Lowers Are Not "Just As Good"

Published on August 4, 2021
Duration: 6:06

This video examines the quality differences between Anderson Manufacturing AR-15 lower receivers and more expensive alternatives. The presenter details a specific issue where the bolt catch can slip behind the magazine follower under certain conditions, particularly with worn magazines. This can lead to a failure to lock the bolt open. The video also touches on compatibility issues with some ambidextrous controls.

Quick Summary

Anderson AR-15 lower receivers may exhibit a bolt catch issue where it slips behind the magazine follower, particularly with worn magazines, preventing the bolt from locking open. This is more prevalent than with premium lowers and can be compounded by certain ambidextrous control designs due to manufacturing tolerances.

Chapters

  1. 00:00Introduction: Anderson Lowers Discussion
  2. 00:13The Claim: Anderson Lowers vs. Premium Brands
  3. 00:33Data Presentation & Methodology
  4. 00:44Observed Differences in Anderson Lowers
  5. 01:03Testing Protocol: Bolt Catch Function
  6. 01:27Test Results: Bolt Catch Failure
  7. 01:55Impact of Magazine Condition
  8. 02:08Real-World Implications & Live Fire
  9. 02:47Comparison with Other Lowers
  10. 02:57Addressing Internet Speculation
  11. 03:15Conclusion: Not Identical, Not Bad
  12. 03:31Ambidextrous Control Compatibility Issues
  13. 03:50Final Thoughts

Frequently Asked Questions

What is the main reliability concern with Anderson AR-15 lower receivers?

The primary reliability concern highlighted is the bolt catch's tendency to slip behind the magazine follower, particularly with worn magazines. This can prevent the bolt from locking open after the last round is fired, defeating a key safety and operational feature.

How does magazine condition affect Anderson lower receiver reliability?

Severely worn magazines, those with over 5,000 rounds or significant physical damage, drastically increase the probability of the bolt catch failing to engage correctly on Anderson lowers. While other lowers may also be affected by worn mags, the issue is noted as more prevalent and problematic with Anderson receivers.

Are Anderson AR-15 lowers compatible with all ambidextrous controls?

No, Anderson lowers can have compatibility issues with certain ambidextrous controls. The video specifically mentions that some designs, like the F4 Control Design ambi mag release, may bind partially, and the Troy ambi mag release can fail to function reliably due to tolerance stacking.

Are Anderson AR-15 lower receivers considered 'bad' or unsafe?

The presenter clarifies that Anderson lowers are not inherently bad or unsafe. However, they are not considered 'just as good' or identical to more expensive alternatives, especially concerning the specific bolt catch issue and potential compatibility problems with certain accessories.

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