The SIG SPEAR LT in 5.56, The new rifle of the SAS and SOCOM/Gen 3 MCX

Published on September 18, 2022
Duration: 28:34

Garand Thumb provides an in-depth review of the SIG Spear LT, detailing its evolution from the MCX Virtus and its origins in military solicitations. He highlights significant weight reduction, improved ergonomics, and enhanced reliability, particularly when suppressed. The review emphasizes its suitability as a modern fighting rifle with advanced features.

Quick Summary

The SIG Spear LT, the Gen 3 MCX, is a significant evolution featuring weight reduction, an AR-18 based short-stroke gas piston system for cleaner operation (especially suppressed), and improved ergonomics. Its handguard ensures accessory zero retention, and it's available in 5.56 NATO, .300 BLK, and 7.62x39mm.

Chapters

  1. 01:14Introduction to the SIG Spear LT
  2. 04:27Origins and Weight Reduction
  3. 06:23Calibers and Operating System
  4. 06:58Muzzle Device and Suppressor Integration
  5. 09:21Barrel and Accuracy
  6. 14:44Handguard Improvements
  7. 19:53Controls and Trigger Redesign
  8. 23:34Final Assessment

Frequently Asked Questions

What makes the SIG Spear LT a significant upgrade over the MCX Virtus?

The Spear LT boasts substantial weight reduction, an improved handguard with zero retention for accessories, fully ambidextrous controls, and a redesigned lower receiver compatible with standard AR-15 triggers, making it more ergonomic and user-friendly.

What operating system does the SIG Spear LT use and why is it beneficial?

It utilizes a short-stroke gas piston system, derived from the AR-18 design. This system is known for its reliability and cleaner operation, especially when firing suppressed, which is a critical advantage for modern military and tactical applications.

What calibers are available for the SIG Spear LT?

The SIG Spear LT is offered in three primary calibers: 5.56x45mm NATO, .300 Blackout, and 7.62x39mm, providing flexibility for various mission requirements and user preferences.

How does the Spear LT's handguard improve accessory zero retention?

The Spear LT's handguard is anchored to the receiver with screws, a crucial design change from the Virtus. This ensures that mounted lasers, IR illuminators, and optics maintain their zero even under heavy use and recoil.

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