The Sig Sauer MCX Spear is a semi-automatic AR-pattern pistol chambered for 7.62×51 NATO and built with modularity and modern controls in mind. This pistol configuration features a 13″ chrome-moly barrel, coyote anodized finish, and a free-float M-LOK handguard. It ships with one 20-round detachable magazine and includes Sig’s SLX/SLH QD-compatible flash hider.
Key Specifications
- The caliber is 7.62×51 NATO.
- The barrel measures 13 inches.
- The firearm ships with a 20-round detachable magazine.
- The action is Semi-Auto.
- The finish is Coyote anodized.
- The barrel material is Chrome Moly Steel.
- The handguard is a M-LOK free-float design.
- The twist rate is 1:10.
- The muzzle device is a QD flash hider with 5/8″-24 tpi threading.
- Controls include ambidextrous safety and bolt catch/release features.
Designed for shooters who value modular performance and modern ergonomics, the MCX Spear delivers configurable handling and suppressor-ready features in a compact pistol package. Its combination of ambidextrous controls, adjustable gas system and M-LOK interface makes it well suited to precision work, range use and adaptable setups where a compact, powerful AR-pattern pistol is required.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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