The Ultimate Compact AR 15 with the BRN 180 (Worth It?)

Published on January 16, 2025
Duration: 26:48

The A3 Tactical Triad chassis converts bufferless AR-15 uppers into a bullpup configuration, offering a compact alternative. While compatible with many bufferless systems like the BRN-180 Gen 2, it requires specific lower receivers and can face trigger reliability issues, notably with the included Rise Armament RA-140. Upgrading the trigger is often necessary for optimal performance, but the familiar AR manual of arms and compact size are significant advantages.

Quick Summary

The A3 Tactical Triad chassis converts bufferless AR-15 uppers into a compact bullpup rifle. It's compatible with uppers like the BRN-180 Gen 2 but often requires a trigger upgrade due to reliability issues with the included Rise Armament RA-140.

Chapters

  1. 00:00Intro: A3 Tactical Triad Bullpup Chassis
  2. 00:39Compatibility: Bufferless Uppers (BRN-180, Jakl, Dissent)
  3. 01:59Unboxing: Chassis Components & Trigger
  4. 03:14Featured Build: BRN-180 Gen 2 & Accessories
  5. 05:17Mechanical Operation & Assembly Details
  6. 08:27Legal Compliance: Overall Length (OAL)
  7. 09:26Range Test: Rise Armament RA-140 Trigger Issues
  8. 11:14Reliability Fix & Performance After Trigger Swap
  9. 12:21Pros & Cons: Price, Trigger, Accessories
  10. 16:35Final Verdict: Is the Triad Worth It?

Frequently Asked Questions

What is the A3 Tactical Triad chassis?

The A3 Tactical Triad is a chassis system designed to convert compatible bufferless AR-15 upper receivers into a bullpup configuration, offering a significantly more compact rifle.

What bufferless AR-15 uppers are compatible with the A3 Tactical Triad?

The Triad chassis is compatible with bufferless uppers like the Faxon ARAK-21, PSA Jakl, CMMG Dissent, Foxtrot Mike FM-15, Matador Arms MAT-9, and the Brownells BRN-180 Gen 2.

What issues were encountered with the included Rise Armament RA-140 trigger?

During range testing, the Rise Armament RA-140 trigger exhibited significant reliability problems, including failures to reset and hammer follow, making it unsuitable for the bullpup configuration without modification or replacement.

How can the A3 Tactical Triad build achieve legal rifle length?

To avoid NFA classification as an SBR, the rifle configuration must have an overall length of at least 26 inches. This is typically achieved by using the larger butt plate extension included with the Triad chassis.

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