SKU: SGPMCX-556N-11B-IR
UPC: 798681699643
MPN: PMCX-556N-11B-IR
The SIG Sauer MCX Spear 556 11.5" Flat Dark Earth with Pistol Brace is a modern, semi-automatic pistol-caliber carbine platform built on the proven MCX action. This compact 5.56 NATO configuration delivers the modularity and ergonomics demanded by operators, law enforcement, and serious shooters who require a short-barreled platform without sacrificing accuracy or handling. The 11.5-inch threaded barrel provides a muzzle velocity sweet spot for the 5.56 NATO round while maintaining overall length suitable for vehicle operations, CQB training, and confined-space deployment scenarios.
The Flat Dark Earth Cerakote finish offers corrosion resistance and low-visibility coloration across harsh environments—from desert operations to humid coastal ranges. The included pistol brace enables one-handed stability and can be configured for different shooting positions. A 30-round capacity standard magazine feeds reliable 5.56 NATO ammunition, ensuring adequate rounds for training evolution or extended engagement scenarios. The threaded muzzle accepts suppressors, compensators, or flash hiders to tailor the platform to mission requirements. At 1 pound, the compact weight profile reduces fatigue during prolonged fieldwork while maintaining the structural integrity MCX systems are known for.
This platform suits operators transitioning from rifle-length 5.56 systems to a short-barreled variant, shooters needing a dedicated short-range training tool, and those building a modular SIG platform. The MCX action handles rapid fire and sustained rates with controlled recoil. Law enforcement tactical teams, private security operators, and civilian enthusiasts rely on the MCX platform for reliability in high-stress scenarios. The 11.5-inch barrel length sits in the practical middle ground between pistol-length setups and mid-length rifles—preserving velocity while eliminating length compromises of longer barrels.
SIG Sauer's MCX line has earned respect in professional circles for consistent accuracy, modular component ecosystems, and durability under sustained use. The 5.56 NATO chambering maintains compatibility with military and commercial supply chains, ensuring ammunition availability across any operational or training environment. The pistol-brace configuration keeps overall length manageable while preserving the ergonomic controls shooters expect from AR-pattern systems.
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