Bushmaster ACR 6.8mm SPC

Published on March 27, 2021
Duration: 23:54

This video provides an in-depth look at the Bushmaster ACR, focusing on its modularity and the transition to the 6.8mm SPC caliber. The presenter details the rifle's history, design evolution from Magpul's Masada, and its potential as a military service rifle. Key features like ambidextrous controls, quick-change barrel system, and various caliber options are discussed, along with personal shooting experiences and reliability observations.

Quick Summary

The Bushmaster ACR is a modular rifle platform originally designed by Magpul, featuring a quick-change barrel system and ambidextrous controls. It was intended as a multi-caliber weapon, with common chamberings including 5.56 NATO and 6.8mm SPC, though its market success was hampered by high prices and perceived lack of manufacturer support.

Chapters

  1. 00:08Introduction & History
  2. 00:33Commercial vs. Military Contracts
  3. 01:05Price & Market Issues
  4. 01:33Multi-Caliber System Design
  5. 01:47Initial Calibers & Barrel Lengths
  6. 02:05First Impressions & Recall
  7. 03:13Charging Handle & Handguard Updates
  8. 04:07Stock & Upper Receiver
  9. 04:33Sights & Pistol Grip
  10. 04:53Lower Receiver Controls
  11. 05:30Barrel Specs & Twist Rates
  12. 05:48Adjustable Gas System
  13. 06:21Disassembly Walkthrough
  14. 07:10Trigger & Lower Grip Module
  15. 07:45Bolt Carrier Group & Bolt Assembly
  16. 08:47Handguard Removal
  17. 09:03Barrel Change Procedure
  18. 09:536.8mm SPC Caliber Introduction
  19. 10:54Caliber Swap: 5.56 to 6.8 SPC
  20. 10:586.8mm SPC Magazines
  21. 12:19450 Bushmaster & 300 Blackout
  22. 13:21Military Contracts & Trials
  23. 14:46Production Challenges & Redesign
  24. 15:205.56 Range Test
  25. 17:326.8mm SPC Range Test & Impressions
  26. 17:506.8mm SPC Ammunition Tested
  27. 19:366.8mm SPC Range Footage
  28. 20:41Reliability & Accuracy (6.8 SPC)
  29. 21:43Optic & Accessories
  30. 22:08Magazine Ejection Issue
  31. 23:19Aftermarket Support (Templar Precision)
  32. 23:44Conclusion

Frequently Asked Questions

What are the key features of the Bushmaster ACR rifle?

The Bushmaster ACR is known for its modularity, featuring a quick-change barrel system, ambidextrous controls (bolt release, magazine release, safety), an AR-18-style bolt carrier group, and an adaptable stock. It was designed to be a multi-caliber platform.

How do you change the barrel on a Bushmaster ACR?

To change the barrel on a Bushmaster ACR, you first disassemble the upper receiver. Then, you pull the bolt back, release the lever, push inward on the detent, rotate and remove the locking collar, and finally pull the barrel out. Installation is the reverse process.

What caliber conversions are available for the Bushmaster ACR?

While initially chambered in 5.56 NATO, the ACR was later offered in 6.8mm SPC. Other calibers like .300 Blackout and .450 Bushmaster have also been produced or offered by aftermarket companies, often requiring barrel and bolt swaps.

What were the main criticisms of the Bushmaster ACR?

Major criticisms included its high initial price point, perceived poor support from Bushmaster, delayed market entry, and a tendency to be muzzle-heavy. Some early models also had fire control group issues.

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