$355 Davidson Defense AR9 Build - Box to Combat Load - Cheapest 9mm AR15 AR9 - Mud and Drop Testing

Published on June 14, 2020
Duration: 18:17

This $355 Davidson Defense AR9 build demonstrates surprising reliability despite budget components and extreme testing. The 7.5-inch barrel is recommended for portability and home defense. However, the GunTec magwell adapter requires modifications and can cause seating issues, highlighting a trade-off between cost and functionality.

Quick Summary

The $355 Davidson Defense AR9 build showed impressive reliability, even after mud immersion and drop tests. Key components include a Davidson Defense kit and Anderson lower. The GunTec magwell adapter required modification, but the 7.5-inch barrel is recommended for portability and home defense.

Chapters

  1. 00:00Introduction & Action Montage
  2. 01:34Build Overview & Cost Breakdown
  3. 03:37Component Specifics & Modifications
  4. 05:05Initial Function & Mud Testing
  5. 05:44High-Volume Reliability Drills
  6. 08:43Second Mud Test & Troubleshooting
  7. 12:28Steel Case Ammo Test
  8. 13:43Final Verdict & Conclusion

Frequently Asked Questions

How reliable is the $355 Davidson Defense AR9 build?

The Davidson Defense AR9 build demonstrated surprising reliability, performing well even after being submerged in mud and subjected to drop tests. While some components like the magwell adapter required modification, the core blowback system remained functional.

What are the key components of the $355 Davidson Defense AR9 build?

The build features a Davidson Defense kit, an Anderson lower receiver, and a Foxtrot Mike brace. It utilizes a GunTec magwell adapter for Colt-style magazines and an EOTech 512 optic for testing.

What issues were encountered with the GunTec magwell adapter?

The GunTec magwell adapter required the ejector to be bent for proper function and significant force to seat magazines. It also contributed to sticky bolt release issues after heavy fouling.

Is the 7.5-inch barrel suitable for the AR9 build?

Yes, the speaker recommends the 7.5-inch barrel for this AR9 build, citing its suitability for portability and home defense applications, making it a practical choice for these roles.

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