Description
The Sig Sauer MCX Spear is an AR-platform handgun chambered for 7.62×51 NATO with a 13-inch barrel and a 20-round magazine. Built on an aluminum alloy frame with a coyote anodized finish, it combines modular ergonomics with interface features drawn from SIG’s modern tactical lines. Controls are fully ambidextrous and include rear and side charging handles plus an ambidextrous bolt catch/release. A two-position adjustable gas valve and suppressor-ready SLX/SLH QD interface make the platform adaptable to suppressed or unsuppressed use.
Key Specifications
- Caliber is 7.62 x 51 NATO.
- The barrel measures 13 inches.
- Magazine capacity is 20 rounds and it ships with one 20-round magazine.
- Action type is Semi-Auto.
- Barrel twist rate is 1:10.
- The handguard is a M-LOK free-float design.
- Thread pattern is 5/8-24 tpi for muzzle accessories.
- Finish is coyote anodized on an aluminum frame.
- The muzzle features a QD flash hider compatible with SLX/SLH mounts.
- Controls include fully ambidextrous bolt catch/release and rear & side charging handles.
Compact and purpose-built, the MCX Spear pistol offers the ballistics of 7.62×51 NATO in a concise AR-style package. Its modular features and suppressor-ready interfaces suit a range of precision and general-purpose shooting applications while the coyote-anodized finish provides durable, low-profile corrosion resistance.
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