Crazy New AR15 Bullpup Chassis

Published on April 26, 2025
Duration: 1:43

This video details the assembly and testing of a custom AR-15 bullpup rifle using the A3 Tactical Triad Bullpup Chassis. It covers integrating a Palmetto State Armory lower with a Brownells BRN-180 upper and highlights the selection of a True North Concepts foregrip over the Die Free Tiger Claw for durability. The build is then taken to an outdoor range for live-fire testing, demonstrating its cycling and ergonomics.

Quick Summary

The A3 Tactical Triad Bullpup Chassis converts an AR-15 into a compact rifle using a Palmetto State Armory lower and Brownells BRN-180 upper. The build emphasizes secure receiver integration and durable accessories like the True North Concepts foregrip, demonstrating reliable performance during range testing.

Chapters

  1. 00:00Assembly Overview & Parts
  2. 00:34Lower and Upper Receiver Integration
  3. 00:52Accessory Selection: Foregrips
  4. 01:20Live-Fire Range Testing

Frequently Asked Questions

What components are used to build this AR-15 bullpup rifle?

The build features a standard AR-15 lower receiver from Palmetto State Armory, a Brownells BRN-180 short-stroke piston upper receiver, and the A3 Tactical Triad Bullpup Chassis for the conversion.

How is the upper receiver secured to the lower receiver in this bullpup conversion?

A specialized mounting piece is utilized on the bottom of the assembly to ensure a secure and stable connection between the AR-15 lower receiver and the bullpup chassis system.

Which foregrip was preferred for the AR-15 bullpup build and why?

The True North Concepts foregrip was ultimately chosen over the Die Free Tiger Claw foregrip primarily due to its perceived greater durability and suitability for the build.

What are the key benefits of using a bullpup chassis for an AR-15?

Bullpup chassis kits, like the A3 Tactical Triad, convert a standard AR-15 into a more compact rifle configuration while maintaining familiar AR-15 controls and components.

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