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

Sight Alignment
Sight Alignment

Sighted Fire vs. Point-Shooting

A long-standing argument among handgunners revolves around the concept of sighted fire versus point-shooting. A more productive approach is to understand the problem each is trying to solve.

Derya Expands TM22 Family with Timekeeper & Pump Models

Derya continues the expansion of its rimfire line with two new models for 2026, an update of the original semi-auto TM22 and a new pump-action version.

Gun of the Week: Taurus RPC

The Taurus RPC is a welcome addition to the growing marketplace of PDWs, or personal defense weapons, a concept that pairs pistol-caliber cartridges with larger-format firearms.

The Armed Citizen® Nov. 13, 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.

Review: Kimber 2K11 Pro Comp

Kimber expanded its 2K11 line with the Pro Comp in 2026, providing a Commander-length slide and barrel topped by an integrated compensator.

New for 2026: Bear Creek Arsenal Bear Bolt Pro

North Carolina-based Bear Creek Arsenal, a prolific maker of AR-10 and AR-15 pattern firearms, is combining the modularity of the MSR platform with a traditional turn-bolt action with its Bear Bolt Pro.

Interests



Get the best of American Rifleman delivered to your inbox.