SIG Sauer MCX‑SPEAR LT IR – 5.56 NATO, 16″ Barrel, 30+1
Specs & Features
- Caliber: 5.56×45 NATO, uses standard AR‑15 magazines (30+1 included)
- Barrel: 16″ cold-hammer-forged carbon steel, 1:7 twist, ½‑28 threaded with SIG QD flash hider; lightened profile for improved accuracy
- Coating: Gen II NiR (reduced infrared) FDE Cerakote to minimize thermal signature and boost corrosion resistance
- Action: Short-stroke gas piston, rotating bolt—civilian variant of military MCX design
- Furniture: Telescoping/folding side-fold stock with push-button hinge; lightweight M‑LOK handguard
- Controls: Fully ambidextrous safety, mag release, bolt catch/release & charging handle
- Trigger: SIG flat-blade Matchlite two-stage trigger for precise control
- Weight/Size: ~7.5 lb; ~35″ overall length; folds compact (~26.5″) for transport
Why It Stands Out
- Thermally discreet: Gen II NiR Cerakote helps reduce IR signature, ideal for NVG use
- Modular & compact: Folding stock and interchangeable LT barrels, offers versatility and ease of carry
- Ambidextrous & suppressor-ready: Full dual-sided controls plus QD flash hider for easy suppressor attachment
- Match-grade performance: Cold-hammer-forged barrel and crisp Matchlite trigger deliver sub-MOA accuracy potential









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