The Sig Sauer MCX Spear in 7.62x51mm NATO (MPN RSPEAR-762-16B) is the commercial version of the rifle Sig Sauer built for the U.S. Army’s Next Generation Squad Weapon program, pairing a 16-inch black barrel rifled at a 1:10-inch twist with a Coyote finish. Sig Sauer equips the MCX Spear with an ambidextrous bolt catch and release, a rear and side charging handle, a 2-position adjustable gas valve, and an SLX/SLH QD flash hider threaded 5/8×24. The rifle folds and collapses on a Magpul SL-K stock with a 6-position push-button adjustment and rides on an OEM polymer grip. It feeds from an included 20-round magazine, carries an overall length of about 38.3 inches, and ships at roughly 11.6 pounds. Among AR-pattern rifles in the AR rifles category, the MCX Spear favors shooters who want the same platform fielded as the Army’s next-generation service rifle.

Key Specifications

• Chambered in .308 Win/7.62x51mm NATO with a 1:10-inch rate of twist.
• Features a 16-inch black barrel, threaded 5/8×24.
• Feeds from an included magazine with a 20+1 capacity.
• Equipped with an ambidextrous bolt catch and release.
• Includes a rear and side charging handle.
• Features a 2-position adjustable gas valve.
• Finished with an SLX/SLH QD flash hider.
• Rides on a Magpul SL-K folding, collapsing stock with 6-position adjustment.
• Fitted with an OEM polymer grip.
• Finished in Coyote.

Frequently Asked Questions

Is this the same rifle as the Army’s next-gen service rifle? The MCX Spear is the commercial version of the rifle Sig Sauer built for the Army’s Next Generation Squad Weapon program.

Does the stock fold? Yes, the Magpul SL-K stock folds and collapses with 6-position adjustment.

Can the gas system be adjusted? Yes, a 2-position adjustable gas valve is included.

Buy the Sig Sauer MCX Spear 7.62x51mm Rifle

The same platform fielded as the Army’s next-generation service rifle is exactly what the MCX Spear delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.