Ultimate AR-9 SD Build - Finally Finished 🇺🇸🤫

Published on April 13, 2026
Duration: 2:25

This video details the final stages of an AR-9 SD (suppressed/deactivated) build, focusing on the installation of a Midwest Industries handguard designed to tuck a suppressor. The build features a Noveske barrel and a CMMG 36K suppressor, resulting in a remarkably quiet and reliable firearm. The presenter also highlights the upgrade from an A2 grip to a Dier Co pistol grip for improved ergonomics.

Quick Summary

The ultimate AR-9 SD build features a Midwest Industries handguard designed for suppressor tucking and a CMMG 36K suppressor, making it exceptionally quiet and hearing safe. It also incorporates a Noveske barrel and a Dier Co pistol grip for improved ergonomics and reliability.

Chapters

  1. 00:00Introduction & Build Update
  2. 00:14Midwest Industries Handguard Installation
  3. 00:23Suppressor Integration & SD Function
  4. 00:41CMMG 36K Suppressor Performance
  5. 00:58Noveske Barrel & Handguard Aesthetics
  6. 01:10Dier Co Pistol Grip Upgrade
  7. 01:27Reliability and Shooting Experience
  8. 01:45Hearing Safe Performance
  9. 01:53Optics and Light Setup
  10. 02:06Conclusion & Viewer Thanks

Frequently Asked Questions

What handguard is recommended for an AR-9 SD build that allows suppressor tucking?

For an AR-9 SD build where suppressor tucking is desired, the Midwest Industries fatter handguard model is recommended. This design specifically accommodates a suppressor underneath, creating a more streamlined profile for the firearm.

How does the CMMG 36K suppressor contribute to the AR-9 SD build's performance?

The CMMG 36K suppressor, when used on this AR-9 SD build, significantly reduces the sound signature. Combined with barrel porting, it helps slow down supersonic ammunition, making the firearm exceptionally quiet and hearing safe.

What are the benefits of the Dier Co pistol grip on an AR-9 build?

The Dier Co pistol grip offers improved ergonomics over the standard A2 grip. It features a more vertical angle, which can enhance shooting comfort and control, particularly when used on platforms like a PSA lower receiver.

What makes this AR-9 SD build considered 'hearing safe'?

This AR-9 SD build is considered hearing safe due to the synergistic effect of its components. The CMMG 36K suppressor, combined with barrel porting that slows supersonic ammunition, drastically reduces the noise signature to a level that is safe for unprotected hearing.

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