4 inches Is Not Enough…

Published on March 11, 2026
Duration: 0:34

This content critically examines the PSA Gen 4 AR9, specifically highlighting the limitation imposed by its 4-inch barrel and subsequent handguard design. The instructor, demonstrating experienced firearm knowledge, explains how the handguard's length obstructs the mounting of standard M-LOK accessories and even flash hiders, forcing the use of specific, compact accessories like the Inforce weapon light. While acknowledging the firearm's overall appeal, the core takeaway is the practical challenge of accessory customization due to this design choice.

Quick Summary

The PSA Gen 4 AR9's 4-inch barrel and handguard design present a significant limitation for accessory mounting. The handguard covers the flash hider, leaving no room for standard M-LOK attachments, forcing users to select specialized or compact accessories like the Inforce weapon light.

Chapters

  1. 00:00PSA AR9 Least Favorite Feature: 4-Inch Barrel
  2. 00:16Accessory Mounting Limitations Explained
  3. 00:28Conclusion and Recommendation for PSA AR9

Frequently Asked Questions

What is the main drawback of the PSA Gen 4 AR9 discussed in the video?

The primary criticism of the PSA Gen 4 AR9 is its 4-inch barrel and the resulting handguard design, which significantly restricts the ability to mount standard accessories like M-LOK attachments due to insufficient space.

Why can't M-LOK accessories be easily mounted on the PSA Gen 4 AR9?

The handguard on the PSA Gen 4 AR9 is too short, covering the flash hider and leaving no usable space for M-LOK slots. This forces users to find specialized or compact accessories that can fit within the limited mounting area.

What type of weapon light was used on the PSA AR9 due to mounting limitations?

Due to the restricted mounting space on the PSA Gen 4 AR9's handguard, the instructor had to opt for an Inforce weapon light, as other options were not feasible for direct attachment.

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