Bushmaster ACR Field Strip

Published on September 1, 2016
Duration: 4:36

This guide details the field stripping process for the Bushmaster ACR, a civilian variant of the Remington ACR. It covers the removal of the bolt carrier group, recoil spring, firing pin, cam pin, bolt, gas system components, and barrel. The video highlights similarities to AR-15 fire control groups and the non-reciprocating charging handle.

Quick Summary

To field strip a Bushmaster ACR, first ensure it's unloaded. Then, push out the captive upper receiver pin to hinge it open. Remove the bolt carrier group, recoil spring guide rod, firing pin, cam pin, and bolt. The gas plug and piston can then be removed, followed by the barrel using the integrated wrench.

Chapters

  1. 00:00Introduction
  2. 00:21Chamber Check
  3. 00:34Hand Guard Removal
  4. 00:58Start Field Stripping: Upper Receiver Pin
  5. 01:16Separating Receivers
  6. 01:24Fire Control Group & Bolt Catch
  7. 01:43Stock Removal
  8. 01:54Bolt Carrier Group Removal
  9. 02:03Recoil Spring Guide Rod Removal
  10. 02:14Bolt Carrier Group Disassembly
  11. 02:18Firing Pin Retaining Pin Removal
  12. 02:25Firing Pin Removal
  13. 02:32Cam Pin Removal
  14. 02:42Bolt Removal
  15. 02:54Gas System Settings
  16. 02:58Gas Plug Removal
  17. 03:10Piston and Return Spring Removal
  18. 03:24Barrel Removal
  19. 03:46Fully Field Stripped ACR
  20. 04:09Outro

Frequently Asked Questions

How do you begin field stripping a Bushmaster ACR?

First, ensure the rifle is unloaded by removing the magazine and cycling the charging handle to the rear. Visually and physically inspect the chamber to confirm it is clear of any ammunition before proceeding with disassembly.

What is notable about the Bushmaster ACR's fire control group?

The Bushmaster ACR utilizes an AR-15 style fire control group, which is housed within a separate box. This design potentially allows for compatibility with aftermarket AR-15 triggers.

How is the barrel removed from a Bushmaster ACR?

The Bushmaster ACR features a built-in barrel wrench. To remove the barrel, pull the wrench towards the rear of the gun, rotate it, and then pull the barrel out of the receiver.

What are the gas system settings on the Bushmaster ACR?

The Bushmaster ACR has adjustable gas settings for both suppressed and unsuppressed use. This allows users to tune the rifle's operation for optimal performance with different ammunition types or when using a suppressor.

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