IR Lasers: Handguard Flex and Holding Zero

Published on March 3, 2022
Duration: 6:35

This video explains how IR devices hold zero on AR-15 platforms, differentiating between device integrity and mounting stability. It details how handguard flex and rail shift can impact zero, with rail shift being a more common concern. Solutions range from more rigid handguard designs to direct-mounted systems like ALG Defense or Aero Precision Enhanced uppers.

Quick Summary

IR lasers from quality brands will hold zero if mounted correctly. The main concerns for zero retention on AR-15s are handguard flex from external pressure and rail shift, where the handguard loosens over time. Direct-mounted systems like ALG Defense or integrated uppers offer superior stability.

Chapters

  1. 00:00Introduction: IR Device Zero Retention
  2. 00:11Device and Mount Stability
  3. 00:30Handguard as a Factor in Zero Retention
  4. 01:01Two Possibilities: Rail Flex vs. Rail Shift
  5. 01:08Understanding Handguard Flex
  6. 01:45Making Handguards More Rigid
  7. 02:09Importance of Handguard Rigidity
  8. 02:28Understanding Rail Shift Over Time
  9. 02:56Friction Fit Handguard Design
  10. 03:44Why Friction Fit Designs Exist
  11. 04:01ALG Defense Rails: A Different Approach
  12. 04:25Direct Bolting to Barrel Nut
  13. 04:56Should You Worry About Rail Shift?
  14. 05:13Solutions for Handguard Stability
  15. 05:42Monolithic Uppers and Aero Enhanced System
  16. 06:23Conclusion: Overblown Concerns?

Frequently Asked Questions

Will my IR laser device hold zero on my AR-15 handguard?

Reputable IR devices like Steiner DBAL, MAWL, PEQ, and Holosun will hold zero if the device and its mount are properly installed and tensioned. The primary concern is not the device itself, but potential issues with the handguard mounting system.

What causes an IR laser to lose zero on an AR-15?

Two main factors can cause an IR laser to lose zero: handguard flex from external pressure (like bipod loading) and rail shift, where the handguard itself loosens or rotates slightly over time due to its mounting system.

Is handguard flex a significant issue for IR laser zero?

Handguard flex can cause a shift in zero, especially on longer, less rigid handguards. However, the precision of the laser and NV device are often bigger limitations for long-range accuracy than typical handguard flex.

What are the best handguard mounting solutions for IR laser zero retention?

For maximum stability, consider handguards that bolt directly to the barrel nut, like ALG Defense rails, or integrated systems such as monolithic uppers or the Aero Precision Enhanced system, which minimize or eliminate friction-fit related shift.

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