The SIG Sauer MCX Spear-LT IR is a compact AR-style pistol configured for short-barrel tactical and range use. It pairs a cold hammer-forged 11.5-inch barrel with SIG’s Gen II NiR FDE Cerakote to reduce thermal signature and resist wear in adverse conditions. Designed for users who need a maneuverable platform for range, duty, or general tactical applications.

Key Specifications

• The firearm is chambered in .223 Rem / 5.56 NATO.
• The barrel measures 11.5 inches and is made from cold hammer-forged carbon steel.
• The twist rate is 1:7.
• The barrel is threaded 1/2 in-28 tpi.
• The action is Semi-Auto and it uses a gas piston operating system.
• The receiver finish is Gen II NiR Flat Dark Earth Cerakote.
• The package includes a pistol brace with a folding design and push-button release.
• The firearm ships with one 10-round polymer magazine and uses AR-15 style magazines.
• The handguard features an M-LOK accessory rail for modular mounting options.
• The trigger is a SIG flat blade match trigger.

This model includes a 10-round magazine. Where state magazine-capacity limits apply, buyers must comply with local law: Hawaii, California, Connecticut, District of Columbia, Illinois, Maryland, Massachusetts, New Jersey, New York, Rhode Island, Vermont, Washington, and Colorado. Additionally, this item is indicated as not available for direct ship to California.

The MCX Spear-LT IR emphasizes corrosion resistance, reduced IR signature, and modularity through interchangeable barrels and an M-LOK fore-end. Optics-ready with a Picatinny footprint and a compact folded length for storage, it is built for users who prioritize a reliable, maneuverable platform for range and tactical applications. Available in Clackamas, OR and other retail locations where local law permits.