Sig MCX SPEAR LT - Will it Bend?

Published on December 9, 2023
Duration: 48:53

The Sig MCX SPEAR LT in 5.56 is reviewed, focusing on the controversial barrel flex issue. While Sig claims resolution, the video demonstrates significant flex under manual pressure. Despite weight savings, the reviewer finds the rifle 'jumpier' than older MCX models and criticizes the factory trigger and muzzle device. Ultimately, the SPEAR LT is not recommended at its current price point due to these issues and a preference for older, more reliable MCX variants.

Quick Summary

The Sig MCX SPEAR LT 5.56 faces scrutiny for barrel flex. While Sig claims resolution, tests show significant flex, though harmonics help it return near zero. The rifle is noted as 'jumpier' than older MCX models, with a criticized trigger and difficult-to-remove muzzle device.

Chapters

  1. 00:00Intro: Sig MCX SPEAR LT & Barrel Flex Controversy
  2. 01:01Cold Start Accelerator Drill & Performance
  3. 01:52Optic (Romeo 8T) & Trigger Assessment
  4. 03:59Weight Reduction vs. Recoil Impulse
  5. 06:51Muzzle Device & Suppressor Compatibility Issues
  6. 09:29Advanced Shooting: Throttle Control & Calling Shots
  7. 12:45Critique of Ambidextrous Controls
  8. 15:02Training Methodology: Baseline vs. Pushing Limits
  9. 21:13Drills: Visual Barriers & Movement Simulation
  10. 26:25The 'Will it Bend?' Barrel Flex Test
  11. 28:29Harmonics & Zero Retention After Flex
  12. 31:13Final Verdict & Recommendation

Frequently Asked Questions

What is the main controversy surrounding the Sig MCX SPEAR LT?

The primary controversy is the reported issue of barrel flex or bending in early models. Sig Sauer claims this has been resolved in newer production runs, which this video aims to test.

How does the Sig MCX SPEAR LT perform in terms of recoil and handling?

Despite being about a pound lighter than the MCX Virtus, the SPEAR LT is described as 'jumpier' and more difficult to control during rapid fire, potentially due to its reduced weight and design.

What are the criticisms of the Sig MCX SPEAR LT's trigger and muzzle device?

The factory two-stage trigger is considered heavy and prone to 'trigger freeze' for fast shooting. The muzzle device is criticized for using excessive Rocksett, making suppressor swaps difficult.

Does the Sig MCX SPEAR LT's barrel return to zero after being flexed?

While the barrel does flex significantly under manual pressure, subsequent shots after the initial outlier suggest that barrel harmonics help it return close to its original zero, with POI shift not being catastrophic.

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