Sig Sauer MCX Spear 7.62 NATO 13" Barrel 20+1 Coyote Pistol

The Sig Sauer MCX Spear delivers military-grade performance in 7.62x51mm NATO, combining the proven MCX platform with full-power rifle capabilities. This pistol configuration features a 13-inch barrel optimized for maximum velocity while maintaining compact dimensions for tactical applications.

What Makes This Different

Built on Sig's battle-tested MCX operating system, the Spear incorporates a short-stroke gas piston design that runs cleaner and cooler than direct impingement systems. The adjustable gas block allows fine-tuning for various ammunition weights and suppressor use. Unlike standard AR-10 platforms, the MCX Spear requires no buffer tube, enabling true folding stock compatibility and more compact storage.

Key Features

• 7.62x51mm NATO chambering with 20-round magazine capacity
• 13-inch barrel with 1:10 twist rate for optimal bullet stabilization
• SLX/SLH quick-detach flash hider compatible with Sig suppressors
• Ambidextrous controls including safety, magazine release, and bolt catch
• Adjustable gas block with multiple settings for reliable cycling
• Free-floating M-LOK handguard for accessory mounting
• Coyote Tan Cerakote finish for corrosion resistance

The MCX Spear's short-stroke piston system reduces fouling in the receiver while maintaining consistent bolt velocity across temperature extremes. Field testing demonstrates reliable function with match-grade ammunition producing sub-MOA accuracy at 100 yards. The platform excels in precision rifle applications where compact dimensions matter, from vehicle operations to designated marksman roles.

Technical Specs

• Caliber: 7.62x51mm NATO/.308 Winchester
• Barrel Length: 13 inches with 1:10 twist rate
• Overall Length: 26.75 inches (stock extended)
• Weight: 8.1 pounds (unloaded)
• Magazine Capacity: 20 rounds
• Handguard: Free-floating M-LOK compatible
• Finish: Coyote Tan Cerakote
• Operating System: Short-stroke gas piston
• Manufactured: USA

The MCX Spear represents the evolution of the modern sporting rifle, combining proven reliability with enhanced modularity. Professional users appreciate the tool-free barrel changes and suppressor-ready design that adapts to mission requirements.