The MCX Spear LT IR utilizes Cerakote Gen II IR coating that offers reduced IR signature under thermal or night view use while maintaining superior wear and corrosion resistance.
The MCX platform has been SIG’s breeding ground for the best rifle system through extensive testing and customer feedback. The MCX SPEAR LT is the latest evolution of the MCX platform. Based off the MCX Virtus, the MCX SPEAR LT utilizes a lightened handguard with added rigidity, lightened barrel profile with improved accuracy, ambidextrous bolt catch/release, coyote anodized finish and AR15 trigger compatibility.
The MCX SPEAR lineup also includes new calibers such as 7.62×39 while maintaining reliability and smooth shooting. The MCX SPEAR LT sets a new bar on modular weapons systems.
| Features |
|---|
| Reduced IR Signature Gen II FDE Cerakote |
| Telescoping/Folding Stock With Push-Button Hinge |
| Fully Ambidextrous Safety, Charging Handle and Mag Release |
| SIG Suppressor-Ready QD Flash Hider |
| Interchangeability with ALL MCX-LT Barrels and Handguards |
| Specifications | |
|---|---|
| Caliber | 5.56 NATO |
| Capacity | *30 Rounds, AR Pattern |
| Operation | Gas Piston |
| Barrel Length | 16″ |
| Twist | 1:7 |
| Muzzle | 1/2×28, SIG QD Flash Hider |
| Finish | Cerakote Gen II NiR Coyote |
| Length | 35.0″ |
| Height | 7.5″ |
| Weight | 7.5 lbs |
| Forend | Alloy, M-LOK |
| Trigger | Flat Blade Match |
| Grip | Polymer |
| Stock | Side Folding |




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