Sig Sauer MCX Spear 7.62×51 16″ 20-Round Coyote

Description

The Sig Sauer MCX Spear 7.62×51 16″ 20-Round Coyote is a civilian semi-automatic rifle built on the proven MCX platform, chambered for the hard-hitting 7.62×51 NATO (.308 Win). With a 16-inch barrel, ambidextrous controls, and a Magpul SL-K folding stock, this rifle is made for shooters who demand precision and reliability in a versatile, modern sporting rifle. It includes a 2-position adjustable gas valve and a quick-detach flash hider compatible with SIG SLX/SLH mounts. This is a field-ready tool for precision shooting and general-purpose use.

Key Features

• 16-inch Cold-Hammer-Forged Barrel – This barrel is made to hold tight groups round after round. Why it matters: The cold-hammer-forging process aligns the steel grain for superior accuracy and longevity, even with heavy .308 Win loads.
• 2-Position Adjustable Gas Valve – Tune the gas system for suppressed or unsuppressed fire. Why it matters: It reduces recoil and keeps the action running clean, whether you run a can or shoot in dusty conditions.
• Ambidextrous Controls – Safety selector, magazine release, and bolt catch are mirrored on both sides. Why it matters: Left-handed or right-handed, you operate the rifle without breaking your firing grip—critical in a tight spot.
• Magpul SL-K Folding Stock – Compact and lightweight, this stock folds to the side for storage or transport. Why it matters: It cuts the rifle’s length by nearly 10 inches, making it easier to stow in a case or vehicle without losing zero.
• Quick-Detach Flash Hider – Compatible with SIG SLX/SLH suppressors and mounts. Why it matters: You can attach or remove a suppressor in seconds, keeping your setup versatile for hunting or range work.

Who It’s For

This rifle is built for the traditional shooter who wants a reliable, accurate .308 semi-auto without the bulk of a full-length battle rifle. It suits precision-oriented shooters, hunters who need a durable field rifle, and anyone who values ambidextrous controls and a folding stock for compact carry. If you appreciate a gas system you can tune and a platform that’s been proven in service, this MCX Spear fits the bill.

Pros and Cons

• Pros: Accurate cold-hammer-forged barrel, adjustable gas valve for suppressor use, ambidextrous controls for all shooters, folding stock for compact storage, reliable SIG MCX platform.
• Cons: The trigger is a standard mil-spec style—shooters wanting a crisp break may want to swap it for a Geissele or Timney unit. The 20-round magazine is adequate for most uses, but some may prefer a 25-rounder for extended strings.

Comparison

FAQ

Final Call to Action

This Sig Sauer MCX Spear 7.62×51 16″ 20-Round Coyote is ready to ship. With its adjustable gas system, folding stock, and proven MCX reliability, it’s a solid choice for precision shooting or field use. Browse more Sig Sauer rifles or check our AR Rifles category for similar builds. Order now and get it delivered to your door.

✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
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Last updated: April 2026