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Meet the XM5 And XM250: How the Army’s Plan to Replace the M4 and M249

Sig Sauer photo of XM5 and XM250 rifles
Sig Sauer photo of XM5 and XM250 rifles.

The competition was truly fierce, and yet, Sig Sauer will provide the Army with a huge amount of new XM5 and XM250 small arms. What can these weapons do? What are the pros and cons of these weapons systems? Should America’s enemies be worried? A former U.S. Army infantry officer gave us the details: 

It’s not your grandpa’s M16. The U.S. Army is going with something new. The service branch is constantly trying to evolve as it ponders how to engage different enemies and studies experiences with insurgents and terrorists in the Middle East and South Asia dating back to 9/11. With this tactical evolution in mind, the service branch has picked two new small arms weapons from Sig Sauer that will move it beyond the M4 carbine and the overall family of rifles based on the M16 platform.

Goodbye M4 and M249

The M16 has been the go-to base model of rifles since 1967. Now the army has picked another rifle to replace the M4 (used since 1994) and an automatic weapon to replace the M249 light machine gun (in service since 1984). The new weapons will be known as the XM5 rifle and the XM250 respectively.

Tough Competition to Pick Replacements

This was part of a competition called the Next Generation Squad Weapons (NGSW) program that had entrants from Sig Sauer, General Dynamics, and Textron. Both the XM5 and the XM250 will fire a 6.8mm cartridge instead of the NATO 5.56mm round that was used for decades. The army wanted the NGSW program to yield new weapons that would have better “accuracy, range, signature management, and lethality,” the Army said when describing the NGSW.

New Optic Has Promise

The NGSW also developed a next-generation fire control system with an improved XM157 Vortex optic that will give soldiers the ability to hit targets that are farther away than ballistics fired from the M4 and M249. This optic is supposed to better handle wear and tear. The Army is spending $2.7 billion over the next 10-years just for the optic.

Huge Contracts for Sig Sauer

The XM5 and the XM250 will not enter use completely until 2023. Sig Sauer got a 10-year contract for the new weapons with a total of $4 billion after a 27-month evaluation period. Initial delivery of $20.4 million will comprise the first batch of weapons for more enhanced testing. Eventually, Sig wants the army to order 107,000 XM5 rifles and 13,000 XM250 automatic weapons.

The Army Is Excited About the Performance of the New Weapons

“Both weapons provide significant capability improvements in accuracy, range, and overall lethality. They are lightweight, fire more lethal ammunition, mitigate recoil, provide improved barrel performance, and include integrated muzzle sound and flash reduction,” according to the Army news release.

We Need More Powerful Rifles

For decades, soldiers have called for a round with more stopping power than the 5.56mm provides. This complaint goes back to the Vietnam War when M16 rounds were needed to penetrate dense jungle foliage. The idea behind the 5.56mm was to enter an enemy soldier’s body and tumble through tissue to fatally wound or incapacitate its victim. More wounded personnel would then slow down an attack from greater numbers of enemy troops – something that would give American and NATO forces an advantage in a fight against the Soviet Union.

Get Something With Better Range

Moreover, the M4 has a shorter range and compact design that allows it to be lethal in a close-quarters situation such as clearing a building, but it was not as adept at taking out targets from a greater distance. If many soldiers in a platoon had an M4, there would be situations where the bad guys could simply remain out of the gun’s range. The XM5’s 600-meter range without ballistic shortfalls should alleviate those concerns.

Now serving as 1945’s Defense and National Security Editor, Brent M. Eastwood, PhD, is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer. You can follow him on Twitter @BMEastwood.

Written By

Now serving as 1945s New Defense and National Security Editor, Brent M. Eastwood, PhD, is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer.

1 Comment

1 Comment

  1. Omega 13

    August 10, 2022 at 2:24 pm

    Pity we have to use another Euro company making our firearms. First Beretta, now Sig. Yeah, I know they have American organizations, but so does Mitsubishi. Doesn’t make them American either.

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