Sig Sauer MCX Spear-LT IR Flat Dark Earth 5.56 / .223 Rem 16” Barrel 30RND

SIG Sauer MCX Spear LT IR 5.56 NATO | 16” FDE Cerakote Piston Rifle 

Elite performance with advanced signature reduction — the SIG Sauer MCX Spear LT IR (Model RMCX-556N-16B-IR) is a cutting-edge 5.56 NATO rifle featuring Gen II Near-Infrared (NIR) FDE Cerakote for reduced thermal and night vision signature. Built on SIG’s proven short-stroke piston platform, this lightweight, highly modular rifle delivers exceptional reliability, controllability, and suppressor performance for serious shooters, tactical enthusiasts, and professionals. Now available at Black Market Arms LLC.

The MCX Spear LT IR combines battlefield-proven modularity (interchangeable barrels and handguards), reduced recoil, and modern low-signature technology into one of the most capable 5.56 platforms available today.

Advanced IR-reducing Cerakote, piston-driven reliability, full ambidextrous controls, and SIG’s legendary quality in a lightweight, suppressor-ready package perfect for home defense, range use, or tactical applications.

Shop with confidence at Black Market Arms LLC — your trusted, family-owned Missouri firearms dealer. Expert service, competitive pricing, fast shipping, and a wide selection of premium rifles, pistols, and tactical firearms.

Order your SIG Sauer MCX Spear LT IR today and experience next-generation performance!

Premium Features:
Caliber: 5.56 NATO / .223 Remington — versatile and widely available
Barrel: 16” cold hammer-forged carbon steel barrel with 1:7 twist, threaded (1/2x28) and equipped with SIG QD suppressor-ready flash hider
Action: Short-stroke gas piston system with adjustable gas block for optimized suppressed or unsuppressed use
Capacity: 30+1 rounds (includes one 30-round magazine)
Finish: Gen II NIR Flat Dark Earth (FDE) Cerakote — reduces IR signature while providing superior wear and corrosion resistance
Stock: Telescoping / side-folding stock with push-button hinge for compact storage and rapid deployment
Controls: Fully ambidextrous (safety, charging handle, mag release, bolt catch/release)
Handguard: Lightweight M-LOK compatible forend for seamless accessory mounting
Trigger: SIG Flat Blade Match trigger for crisp, consistent pulls
Weight: Approximately 7.5 lbs — lightweight and maneuverable

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