Inside Look: SIG Sauer MG 338 Machine Gun

by
posted on January 22, 2020
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Ahead of SHOT Show 2020, SIG Sauer provided an in-depth look at the company's revolutionary new MG 338 machine gun, designed for U.S. Military use.

The SIG MG 338 is designed particularly to provide a platform that, in effect, splits the difference between the U.S. M240 machine gun and the .50-caliber M2 Browning. Compared to the current M240 (7.62 NATO) machine gun, the SIG MG 338 is noticeably lighter, weighing only 20 pounds, and is designed to provide enhanced capability over the 7.62 NATO M240.

In comparison to the M2, which has been in U.S. military service for nearly a century, the MG 338 is about 75 percent lighter, offering a man-portable solution with a similar effective-range to the .50 BMG. The guns are also outfitted with SIG Sauer Next Generation Suppressors, which drastically reduce the impact of harmful toxic fumes and signature. The SIG Sauer MG 338 machine gun is a belt-fed, lightweight medium machine gun weighing under 20 lbs., chambered in .338 Norma Mag.

The MG 338 features a short-stroke gas piston system and a proprietary recoil mitigation system, with a free-floating, quick-change barrel, ambidextrous controls, switchable feed tray, charging handle that can be alternated to either side, depending on user preference. As a multi-caliber, modular system, the new SIG MG 338 is easily convertible to 7.62 NATO.

For more information on the MG 338, check out our American Rifleman First Look video above.

Latest

Daniel Defense H9
Daniel Defense H9

Review: Daniel Defense H9

Is the third time the charm? Daniel Defense has introduced a third version of the Hudson H9 pistol. Smaller, lighter and less radical, it could be “the one.”

Supreme Plus: Ranger Point Precision & Line49 Rifle Henry LASR Conversions

A new collaboration between modern lever-action specialists Ranger Point Precision and Line49 Rifle transforms Henry’s groundbreaking Lever Action Supreme Rifle.

The Armed Citizen® June 15, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

NRA Launches "ARC Across America" National Challenge

The National Rifle Association is inviting Americans, coast-to-coast, to celebrate the 250th anniversary of the United States—and the freedom for which it stands—by exercising their rights by participating in the "ARC Across America" National Challenge.

New for 2026: Sightmark Strikon Prism Optics

Sightmark now offers two different prismatic optics for carbines and shotguns.

Q&A: Getting the Lead Out of Revolver Cylinders & Barrels

One American Rifleman reader wrote in, asking how to clean lead build-up out of his Colt revolver and also prevent lead from building up with his cast bullets.

Interests



Get the best of American Rifleman delivered to your inbox.