Sig Sauer MCX-Spear RSPEAR-68-16B-NG | 16″ | 20rd

The Sig Sauer MCX-SPEAR is a modern modular rifle offered in a coyote anodized finish with a folding, telescoping Magpul SL‑M stock and a 16.0-inch threaded barrel. It ships with one 20‑round steel AR-10 magazine and is built around a gas-piston operating system with an adjustable gas valve. For a versatile optic under $1,000 that pairs well with this platform, consider the Vortex Strike Eagle 1-6×24 for close-to-midrange work and quick target acquisition.

This rifle is suited to precision-oriented range work and practical shooting applications where modularity and adjustable gas operation are beneficial. It is optics-ready and configured to accept a wide range of sighting solutions and accessories via M-LOK and top rail mounting.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is MCX-SPEAR.
• The manufacturer’s part number is RSPEAR-68-16B-NG.
• The barrel measures 16.0 inches and is threaded.
• The receiver finish is Coyote Anodized.
• The stock type is a Folding Telescoping Magpul SL-M Stock.
• The package includes 1 x 20-round steel AR-10 magazine.
• The action type is Semi-Auto.
• The rate of twist is 1-in-7.
• The muzzle thread pattern is 5/8×24.
• The weight is 9.2 lbs w/magazine.
• The overall length is 38.3 inches.
• The operating system is a Gas Piston system with adjustable gas settings.
• The accessory rail/handguard standard is M-LOK.
• The UPC is 798681703081.

Designed for shooters who value modularity and modern operating systems, the MCX-SPEAR brings a folding, compact form factor together with adjustable gas operation and an M-LOK interface for accessory flexibility. The vehicle of choice for informed shooters who prioritize adaptability, this platform accepts a wide range of optics and suppressor-ready muzzle devices thanks to its threaded barrel and top rail. Its included 20-round steel magazine and robust construction make it a straightforward option for range-focused precision and practical shooting disciplines.

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