Bear Creek Arsenal .410 upper is back! They sent a new one and it is much better!

Published on October 13, 2023
Duration: 6:25

This video provides an in-depth inspection of a returned Bear Creek Arsenal .410 upper, highlighting improvements in chamber polishing and extractor design. It also details a DIY modification process for 10-round magazines to improve their fit and function, and assesses the performance of ATI 5-round magazines, including the last-shot hold-open feature.

Quick Summary

The Bear Creek Arsenal .410 upper has been improved with better chamber polishing and a redesigned extractor. DIY magazine modifications, like sanding the edges of 10-round magazines, can enhance fit and function, while ATI 5-round magazines offer a working last-shot hold-open feature.

Chapters

  1. 00:00Introduction & Upper Return
  2. 00:31Unboxing and Initial Inspection
  3. 01:08Identifying the New Upper
  4. 01:33Barrel Markings Check
  5. 01:47Chamber and Bolt Inspection
  6. 02:52Extractor Design Changes
  7. 03:27Included Pocket Knife
  8. 04:07Magazine Issues and Modifications
  9. 04:35Modifying 10-Round Magazines
  10. 04:59ATI 5-Round Magazine Assessment
  11. 06:01Last Shot Hold Open Test
  12. 06:19Conclusion and Future Testing

Frequently Asked Questions

What improvements were made to the Bear Creek Arsenal .410 upper?

The returned Bear Creek Arsenal .410 upper features significantly improved chamber polishing, making it look much better than the previous version. Additionally, the extractor has a completely different cut and profile, indicating a design change by the manufacturer.

How can I improve the fit of my .410 magazines in an AR-410 upper?

For 10-round magazines that are dragging, you can sand down the front and back areas that cause friction. This DIY modification can make insertion, removal, and magazine release much smoother and easier.

Does the Bear Creek Arsenal .410 upper have a last-shot hold open feature?

The last-shot hold-open feature works well with the American Tactical (ATI) 5-round .410 magazines. However, it does not appear to function with the 10-round magazines tested in this video.

What are the signs that Bear Creek Arsenal is test-firing their .410 uppers?

Evidence of test firing includes burnt gunpowder residue and oil in the chamber, as well as small brass shavings on the bolt face. This indicates the uppers are being fired before shipping, a requested quality control measure.

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