2A ARMAMENT AR15 Titanium Regulated Bolt Carrier Review

Published on July 4, 2018
Duration: 9:44

This review details the 2A Armament Adjustable Bolt Carrier System, a titanium BCG designed to regulate gas in AR-15 platforms, particularly beneficial for suppressed SBRs. The system allows for on-the-fly gas adjustment via two screws accessed through the ejection port, mitigating over-gassing and gas blowback without altering the firearm's external aesthetics. The reviewer demonstrates its use, highlighting the ease of adjustment and its impact on cycling reliability and shooter comfort.

Quick Summary

The 2A Armament Adjustable Bolt Carrier System is a lightweight titanium BCG designed to solve over-gassing issues in AR-15s, especially suppressed SBRs. It allows for precise gas regulation via an adjustable valve accessed through the ejection port, reducing blowback and improving cycling reliability without altering the firearm's aesthetics.

Chapters

  1. 00:10Problem: Over-Gassed Rifles
  2. 00:45Solution: Adjustable Gas Systems
  3. 01:05Introducing the 2A Armament BCG
  4. 01:32Titanium Construction & Weight
  5. 01:44How the Gas Adjustment Works
  6. 02:03Adjustment Screws Explained
  7. 02:13Gas Valve Positions (Vertical vs. Horizontal)
  8. 03:06Accessing Adjustments Through Ejection Port
  9. 03:41Testing with M193 Ammunition
  10. 04:04Initial Cycling Issues (Under-Gassed)
  11. 04:17Adjusting Gas for Better Cycling
  12. 04:45Brass Ejection Analysis
  13. 06:29The Suppressor Test
  14. 07:03Suppressor Cycling Performance
  15. 07:30Final Gas Adjustment
  16. 08:10Performance with Suppressor On
  17. 08:33Reduced Gas Blowback
  18. 08:40No Tools Required for Adjustment
  19. 08:53Aesthetic Benefits

Frequently Asked Questions

What problem does the 2A Armament Adjustable Bolt Carrier System solve?

It addresses the issue of over-gassing in AR-15s, particularly short-barreled rifles and suppressed firearms. Over-gassing leads to excessive gas blowback, violent action, and potential extraction failures, which this system helps to regulate.

How is the gas flow adjusted on the 2A Armament BCG?

Gas flow is adjusted using a special Allen wrench that interfaces with two screws on the bolt carrier. A larger screw secures a smaller, adjustable gas valve. The valve's orientation (vertical for open, horizontal for closed) controls the amount of gas directed into the carrier.

What are the benefits of the 2A Armament Titanium Bolt Carrier?

The primary benefits are its extremely light weight due to titanium construction, and its ability to precisely regulate gas flow. This results in reduced gas blowback, smoother cycling, and improved shooter comfort, especially when using suppressors.

Can the 2A Armament BCG be adjusted without taking the rifle apart?

Yes, the 2A Armament BCG is designed for convenient adjustment. The gas valve can be accessed and tuned through the firearm's ejection port using the included Allen wrench, eliminating the need for full disassembly for minor gas tuning.

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