Sig Sauer MCX Spear-LT IR 5.56 11.5in FDE 10rd

About this product

The Sig Sauer MCX Spear-LT IR is a compact, modular 5.56 NATO pistol designed for maneuverability and adaptability in close-quarters and tactical use. It pairs an 11.5-inch threaded, cold hammer-forged carbon steel barrel with SIG’s Gen II NiR FDE Cerakote to reduce thermal signature and enhance corrosion resistance. The platform emphasizes modularity with interchangeable barrels, an M-LOK handguard, and a folding pistol brace for reduced transport length. Controls and ergonomics are built for ambidextrous handling and quick accessory integration.

Key Specifications

• The firearm is chambered in .223 Rem / 5.56 NATO.
• The barrel measures 11.5 inches and is steel threaded.
• The barrel material is cold hammer-forged carbon steel.
• The twist rate is 1:7.
• The muzzle uses a QD flash hider and the barrel threads are 1/2 in-28 tpi.
• The action is Semi-Auto operating on a gas piston system.
• The trigger is a Flat Blade Match.
• The supplied magazine capacity is 10 rounds with one polymer magazine included.
• The receiver finish is Gen II NiR FDE Cerakote.
• The firearm includes a folding pistol brace with push-button hinge and an M-LOK handguard.

Engineered for robust performance and modular flexibility, the MCX Spear-LT IR combines a short, well-appointed barrel with SIG’s durable finish and user-focused controls. Its compact profile and accessory-ready interface make it a practical choice for shooters who value adaptability and straightforward functionality in a modern 5.56 platform.

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