Sig Sauer MCX-SPEAR LT | 5.56 NATO | 16″ Barrel

The Sig Sauer MCX-SPEAR LT is a lightweight, modular rifle built on the MCX platform and chambered for 5.56 NATO. It features a 16″ cold hammer-forged barrel, an M-LOK handguard, and a folding minimalist stock for compact transport and storage. Controls are ambidextrous and the rifle is configured to accept AR-15 style triggers while remaining optic ready.

For a practical optic under $1,000 that pairs well with this platform, consider a 1-6x or 1-8x variable such as the Vortex Strike Eagle 1-6×24; that magnification range supports close-quarters handling with enough precision for mid-range engagements.

Applications: patrol or duty-style carbine work and precision-focused range training.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is listed as MCX-SPEAR LT.
• The cartridge is 5.56 NATO.
• The barrel measures 16 inches.
• The action type is Semi-Auto.
• The operating system is Gas Piston.
• The stock is a Folding Minimalist Plus design.
• The handguard uses M-LOK attachment points.
• The barrel material is cold hammer-forged carbon steel.
• The trigger is a SIG flat blade match style.
• The rifle includes one magazine (capacity information varies in source data).
• The muzzle threads are 1/2-28 tpi.
• The rifle is listed as optic ready.
• The listed weight is 7.5 lb.
• The UPC is 798681683321.

The MCX-SPEAR LT blends modularity with reduced weight and a compact folding profile to suit shooters who need a capable carbine platform that adapts to mission-specific setups. Its cold hammer-forged barrel and piston operating system support consistent performance with a range of AR-compatible accessories and optics. If you need a versatile rifle that balances handling and accuracy in a compact package, the MCX-SPEAR LT is a practical option to consider.

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