Articles

SOCOM and Marine Corps move closer to Ma Deuce replacement

There's a lot going on behind closed doors in the ground services as planners see an opportunity to fundamentally change the mix of infantry weapons given bigger defense budgets and a command more receptive to change.


WATM earlier reported on moves in the Army to quickly outfit soldiers with an interim battle rifle capability with available 7.62 NATO chambered rifles to replace some standard-issue 5.56 M4s in the infantry squad and platoon. It now seems the service is set to issue an Urgent Needs requirement for over 6,000 battle rifles for soldiers in the fight now.

But in a move that analysts say could fundamentally transform the lethality of small units on the front lines, U.S. Special Operations Command and the Marine Corps have teamed up to find ways to replace some of their M2 .50 caliber machine guns and M240 machine guns with a new one chambered in an innovative round developed primarily for long-range precision shooters in the civilian market.

WATM reported in March that the services were taking a hard look at the Lightweight Medium Machine Gun developed by General Dynamics that fires the .338 Norma Magnum round — a relatively new cartridge that's seen few military applications until now. According to sources in close touch with military planners, the .338 NM machine gun is 3 pounds lighter than the M240B and has double the range and lethality of the 7.62 round.

On May 11, SOCOM and the Marine Corps issued a so-called "Sources Sought" message to industry asking for a LWMMG that weighs less than 24 pounds, with a rate of fire between 500-600 rounds and which includes a suppressed and un-suppressed quick-change barrel.

This slide from a recent industry briefing shows the LWMMG and its .338 NM round potentially reach targets beyond the .50 cal M2 range. Stats show an incredible 5x energy at 1,000 meters compared to the NATO 7.62 round. (Photo from General Dynamics)

The LWMMG should have the capability to accurately engage point targets out to 2,000 meters, SOCOM and the Marine Corps says.

The request is in answer to worries by military planners that the enemy in Iraq, Afghanistan, Syria and other potential battlefields have widely-available small arms capabilities that can target U.S. troops at ranges Americans can't reach with most weapons. Additionally, the M2 is extremely heavy and cannot be wielded by a single operator like the LWMMG can.

Documents show the 75th Ranger Regiment and Marine special operations units have successfully evaluated four LWMMGs and 16,000 rounds of .338 NM ammunition and want more.

The Sources Sought notice also includes a request for .338 NM ammunition with a polymer case rather than a brass or steel one — an effort to cut down on the overall weight of the system and allow more rounds per shooter. General Dynamics is well on its way to fielding a polymer-cased .338 round (less than 13 pounds for a 500-round box), and the Marine Corps is moving forward with outfitting its forces with polymer-cased .50 caliber rounds.

The technology to develop lightweight rounds that can handle the heat and pressure of automatic fire is progressing rapidly. (Photo from General Dynamics)

"In my opinion, adoption of this capability is the single greatest small arms capability enhancement to the US military in the last century," said one military small arms expert on the industry website SoldierSystems.net. "It offers the ability to deliver accurate sustained fire at ranges out to 2000m in a package which can be employed by one operator."

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