Taskforce Expedition - BRN-180 Build

Published on November 15, 2024
Duration: 20:01

This video provides a detailed guide on assembling a BRN-180 upper receiver onto an American Defense Manufacturing UIC 180 lower receiver. It covers the installation of a Guntech trigger and selector, a Midwest Industries folding stock, and the final assembly of the upper and lower receivers. The build is part of a fundraiser for Task Force Expedition, an organization supporting military, first responders, and Second Amendment rights.

Quick Summary

The American Defense Manufacturing UIC 180 lower receiver is ideal for BRN-180 builds as it includes a machined 1913 rail on the rear. This accommodates the BRN-180's integrated buffer and spring system, which is housed within the upper receiver, simplifying the lower assembly.

Chapters

  1. 00:00Introduction to Task Force Expedition Build
  2. 00:46BRN-180 Build Overview
  3. 01:31Components for the BRN-180 Build
  4. 02:59Lower Receiver Vise Block Installation
  5. 03:38Guntech BGE Trigger Installation
  6. 04:48Hammer Pin and Spring Clip Installation
  7. 07:29Guntech Selector Installation
  8. 08:58Safety Detent and Spring Installation
  9. 11:07Midwest Industries Folding Stock Installation
  10. 13:29Thread Locker Application for Stock
  11. 15:32Upper and Lower Receiver Assembly
  12. 16:46Function Check and Optic Mounting Prep
  13. 17:41Holo Sun Optic Installation
  14. 19:01BRN-180 Build Completion and Outro

Frequently Asked Questions

What makes the American Defense Manufacturing UIC 180 lower receiver suitable for a BRN-180 build?

The ADM UIC 180 lower is specifically designed for BRN-180 uppers. It features a machined 1913 rail on the rear because the BRN-180's buffer and spring system are integrated into the upper receiver, eliminating the need for a traditional buffer tube on the lower.

How is the Guntech BGE trigger installed differently on an AR-15 platform?

The Guntech BGE trigger requires a special spring clip to retain its hammer pin. Unlike standard AR triggers, the hammer itself lacks an integrated spring retainer, so this clip is essential for securing the pin within the receiver.

What are the key features of the Midwest Industries Alpha AK stock used in this BRN-180 build?

The Midwest Industries Alpha AK stock is adaptable for AR platforms and offers significant adjustability. It includes an adjustable cheek riser and an adjustable butt pad, allowing users to customize the fit for optimal comfort and shooting posture.

Why is thread locker recommended when installing the Midwest Industries stock?

Thread locker is applied to the stock mounting screws to ensure a secure fit and prevent them from loosening over time due to the vibrations and recoil generated during firing. This maintains the stock's stability and the integrity of the build.

More Gunsmithing & DIY Videos You Might Like

More from Brownells, Inc.

View all →