The Sig Sauer MCX‑Spear LT IR is a modular modern sporting rifle chambered in 5.56 NATO and equipped with a 16‑inch cold‑hammer‑forged barrel and Gen II NIR Cerakote finish. It features a telescoping/folding stock with a push‑button hinge, fully ambidextrous controls, and a suppressor‑ready QD flash hider. The MCX‑Spear LT platform accepts MCX‑LT barrels and handguards and provides M‑LOK attachment points for accessories.
Key Specifications
- The caliber is 5.56 NATO.
- The barrel measures 16 inches.
- The barrel material is cold hammer forged carbon steel.
- The receiver/frame finish is Gen II NIR Cerakote (Flat Dark Earth).
- The frame material is aluminum.
- The action is semi‑automatic.
- The stock is a telescoping/folding design with a push‑button hinge.
- The operating system is a gas piston with an adjustable gas system.
- The rifle ships with one removable magazine.
- The weight with magazine is 7.5 lb.
Built for modularity and reduced infrared signature, the MCX‑Spear LT IR combines corrosion‑resistant finishes with a lightweight, foldable stock for compact transport and flexible configuration. Its cold‑hammer‑forged barrel, ambidextrous controls, and M‑LOK handguard provide a practical foundation for optics and accessory setups.
Whether configuring a rifle for precision range work, field use, or general modern sporting applications, the MCX‑Spear LT IR offers robust materials and an adaptable platform that supports multiple MCX‑LT components while minimizing thermal signature and maintaining reliable operation.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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