The Sig Sauer MCX-SPEAR LT IR is a compact, gas-piston AR-style pistol built for modularity and low-signature finish options. It ships with a 11.5-inch threaded barrel and a 30-round polymer magazine, and is configured with ambidextrous controls and a folding pistol brace. The design emphasizes corrosion resistance and accessory integration for practical field and range use.
Key Specifications
- Chambered in 5.56 NATO.
- The barrel measures 11.5 inches.
- The barrel is made from Cold Hammer Forged Carbon Steel.
- The rifling uses a 1:7 twist rate.
- The muzzle is threaded 1/2 in – 28 tpi for compatible devices.
- The action is Semi-Auto.
- The operating system is a Gas Piston design.
- The firearm ships with a folding brace with push-button hinge.
- Includes (1) 30rd polymer magazine.
- The receiver is finished in Gen II IR Flat Dark Earth Cerakote and the handguard features M-LOK attachment points.
The MCX-SPEAR LT IR pairs a compact, threaded barrel and adjustable gas system with SIG’s flat-blade match trigger and fully ambidextrous controls to support precise, repeatable operation in a compact package. Its modular layout and corrosion-resistant finish make it a practical option for shooters who need a robust, configurable AR-style pistol platform for range use and other legal civilian applications.
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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