Sig Sauer MCX SPEAR-LT 5.56 NATO Rifle 16" Barrel - Black

Sig Sauer MCX SPEAR-LT 5.56 NATO Rifle 16" Barrel - Black

The Sig Sauer MCX SPEAR‑LT represents the next major evolution of the MCX platform—lighter, more refined, and even more modular than its predecessors. Built on years of real‑world feedback and extensive testing, the SPEAR‑LT brings improved ergonomics, enhanced accuracy, and full ambidextrous functionality to one of the most advanced rifle systems on the market.

This 5.56 NATO variant features a 16" lightened profile barrel paired with a 13" lightweight ergonomic M‑LOK handguard, offering excellent balance and rigidity. The black anodized finish provides durability in harsh environments, while the side‑folding stock maximizes portability and compact storage.

Sig equips the SPEAR‑LT with the Flatblade Match Trigger, delivering a clean, predictable break ideal for precision shooting. Fully ambidextrous controls—including safety, bolt catch, and magazine release—ensure seamless operation for any shooter. The rifle also includes a QD suppressor‑ready flash hider and supports interchangeable barrels, reinforcing the MCX’s reputation as one of the most modular platforms available.

Black Anodized Finish
Durable, corrosion‑resistant exterior built for hard use.

Lightweight 13" M‑LOK Handguard
Improved rigidity with attachment screws and enhanced ergonomics.

SIG Flatblade Match Trigger
Clean, crisp break for improved accuracy and control.

Fully Ambidextrous Controls
Bolt catch, safety, and mag release accessible from either side.

Interchangeable Barrels
Supports caliber and barrel‑length swaps for maximum modularity.

QD Suppressor‑Ready Flash Hider
Compatible with SIG suppressor systems.

Side‑Folding Stock
Compact, minimalist design for easy transport and storage.

Specifications

• Manufacturer: Sig Sauer
• Model: MCX SPEAR‑LT
• Caliber: 5.56 NATO / .223 Remington
• Action: Semi‑automatic
• Barrel Length: 16"
• Handguard: 13" lightweight ergonomic M‑LOK
• Finish: Black anodized
• Stock: Side‑folding
• Trigger: SIG Flatblade Match Trigger
• Controls: Fully ambidextrous
• Muzzle Device: SIG QD suppressor‑ready flash hider
• Barrel System: Interchangeable
• Magazine Capacity: 30 rounds
• Magazines Included: 1