The Black Rifle Arms C.A.P.S. Upper Receiver

Published on November 15, 2018
Duration: 16:01

This review of the Black Rifle Arms C.A.P.S. upper receiver highlights its innovative Captive Adaptive Piston System, designed to mitigate carrier tilt with a polymer buffer. The adjustable gas block offers four settings for various ammunition types and conditions, and the system can be adjusted without tools. The reviewer notes its reliability and ease of use, though suggests improvements like drilling and pinning the gas block for enhanced security.

Quick Summary

The Black Rifle Arms C.A.P.S. (Captive Adaptive Piston System) addresses carrier tilt with a polymer buffer, reducing receiver extension wear and offering self-lubrication. Its tool-less, 360-degree adjustable gas block has four settings for optimal performance with various ammunition and suppressed use.

Chapters

  1. 00:00Introduction to Black Rifle Arms C.A.P.S. Upper
  2. 00:11Origin of the C.A.P.S. System
  3. 00:27Carrier Tilt Solution Explained
  4. 00:51Comparison to Other Piston Systems
  5. 01:32Gas Block Adjustment Features
  6. 02:14Tool-less Adjustment and Audible Click
  7. 02:43Bolt Carrier Design and Polymer Buffer
  8. 03:00Gas System Disassembly
  9. 03:47Gas Block Set Screws Criticism
  10. 04:18Reassembly Process
  11. 04:36Key Features Summary
  12. 04:41Barrel Specifications and Configurations
  13. 04:56Suppressor Use and Gas System Impact
  14. 05:40Residue Blowback with Suppressors
  15. 05:50Optics and Sights
  16. 06:07Range Test: Suppressed and Unsuppressed Firing
  17. 10:12Overall Performance and Reliability
  18. 10:45Subsonic Ammunition Test and Bullet Stabilization
  19. 11:07Gas Blowback Mitigation with Charging Handle
  20. 11:27Accuracy and System Design
  21. 11:41Criticisms: Drill/Pin Gas Block and Visual Indicators
  22. 12:06Addressing Carrier Tilt and Polymer Benefits
  23. 12:40Available Calibers and Platforms
  24. 13:15Ammunition Variance and Gas System Adaptability
  25. 13:40Self-Regulated System Option
  26. 13:54Available Configurations and Rail Systems
  27. 14:03Conclusion and Recommendation

Frequently Asked Questions

What is the primary benefit of the Black Rifle Arms C.A.P.S. system?

The primary benefit of the Black Rifle Arms C.A.P.S. (Captive Adaptive Piston System) is its innovative approach to mitigating carrier tilt using a polymer buffer on the bolt carrier. This design aims to reduce wear on the receiver extension and provides self-lubricating properties.

How does the C.A.P.S. gas block adjustment work?

The C.A.P.S. gas block features a 360-degree rotating adjustment mechanism with four distinct settings: normal, suppressed, light, and ultra-light. This allows users to fine-tune gas operation for various ammunition types and shooting conditions without the need for tools.

What are the main criticisms of the Black Rifle Arms C.A.P.S. system?

The main criticisms noted by the reviewer include a desire for the gas block to be drilled and pinned for enhanced security, and the absence of visual indicators on the gas block to clearly show the selected adjustment setting.

What is the reliability of the Black Rifle Arms C.A.P.S. system?

The reviewer reported 100% reliability with the C.A.P.S. system after firing approximately 2,000 rounds, both suppressed and unsuppressed, including with challenging ammunition like 100-grain subsonic loads.

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