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Army Modular Handgun System: The Birth of the M17 & M18

Ever wondered how the M17 and M18 came to be? We walk you through how the U.S. Army went about selecting its latest service pistol.

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By
Aden Tate (Author)

Locksmith. Outdoorsman. Author of 3 books on survival & prepping

Published May 20, 2022
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Within the past five years, a lot has changed for the U.S. Army. One of those things was the hunt for a new service pistol.

After a host of complaints about the M9 being too heavy, jamming, and being unwieldy, the Army realized something needed to give. 

Beretta M9A3
Beretta M9A3

And thus began the search for a new pistol.

Gun manufacturers throughout the world lined up at the door with hopes of winning a very lucrative contract, and the Army tested just about everything that came through its doors. 

Testing
Wearing a white coat makes it official, right?

But how did the U.S. Army eventually land on the M17?

Read on to find out!

The Army Searches for a New Pistol

While the Army replaced the 1911 with the M9 due to its lighter design and extra capacity, soldiers throughout the U.S. military at the time had their hesitations with the transition.

Colt M1911
Colt M1911

As time went on, those hesitations would prove justified. 

For starters, the M9 is heavy. Soldiers trekking through the mountains of Afghanistan were stuck with the heavy hunk of metal.

Beretta M9
Beretta M9

Furthermore, the size of the grips made it difficult for service members with smaller hands to comfortably hold the weapon as well. 

M9 Training
Shooting the M9 (Photo: Sgt. James Geelen)

Only 58% of soldiers who’d used the M9 in combat reported being satisfied with it. Of those who’d used the M9 in combat, 26% reported it jammed.

While cheap CheckMate magazines have been blamed for such, the Army decided it was time for a change.

A pistol was needed that could address all of these issues...and so began the hunt. 

MHS Requirements

Training with M17
Training with the M17 (Photo: Sgt. Ryan Tatum)

The Army laid out a very stringent list of requirements a pistol had to have to even be considered as the new sidearm. In fact, 351 pages worth were laid out.

The Army basically created a dream team list of everything they could possibly want from a pistol and then said, “Yes, please.” 

Training with M17 2
Training with M17 (Photo: Amy Stork)

Among those features necessary to win the contest were

  • Suppressor compatible
  • Ability to accept different magazine sizes
  • Modular grips
  • A grip that would accept hand sizes from the 5th to 95th percentile
  • Ability to mount lasers and lights on a Picatinny rail
  • Ability to accept different slide/barrel combinations
Shooting the M17
Shooting the M17 (Photo: Sgt. Samantha Stoffregen)

Twelve different companies entered the contest, including famous names like Glock, Sig Sauer, FN, and more. 

Army Testing Begins

Training with the M17
Training with the M17. (Photo: Amy Stork)

Aside from the cosmetic features and options, the new pistol had to shoot.

As such, the Army wanted something with better performance, durability, and adaptability than the M9. 

Competitors' pistols were taken to Fort Bragg to see if they would pass the test. 

Fort Bragg sign
You can probably guess why the testing happened at Fort Bragg.

One of the primary hurdles to be jumped was the ability to shoot consistent patterns within a 4-inch circle at 50 meters. The weapon had to be able to do this 90% of the time, and it had to hold this degree of accuracy for the lifetime of the weapon. 

All weapons were tested at close range too.

Training with the M17 5
Training with the M17 (Photo: Amy Stork)

Anything from point-blank to 50 meters was considered fair game for the test. The weapon/ammunition combo had to show improved lethality compared to the M9 with its M882 ammo.

Anywhere up to 14 inches of ballistic gelatin were used to showcase the potential lethality of the rounds. 

Ballistic Gel Testing
(Photo: Lucky Gunner)

The Army didn’t really care what caliber this would mean, they just wanted something that could accomplish the end goal. As long as it did that, they were happy. 

As far as reliability goes, the winning weapon would have to be capable of an average of 2,000 rounds between stoppage, 10,000 rounds between failure, and service life of 35,000 rounds.

In other words, the Army wanted a handgun that was going to be around for a long time and do the job properly throughout its entire lifespan as well. Anything less than that was grounds for exclusion. 

MHS Winner: Sig Sauer XM17

After two years of testing, the Army finally announced a winner in January of 2017...the Sig Sauer XM17 Modular Handgun System. 

XM17 Modular Handgun
XM17 Modular Handgun

While typically just called the XM17, this new pistol was a variant of the publicly available P320. (A compact version for concealed carry known as the XM18 was also chosen.)

Sig Sauer P320
Sig Sauer P320
$474
at Palmetto State Armory
Prices accurate at time of writing

The XM17 is a 9mm fully ambidextrous pistol with safety and slide catch levers on both sides.

It possesses a bright orange loaded chamber indicator, and comes with a flap at the top of the trigger to keep debris from getting inside of the weapon. 

The M17 is a formidable weapon designed to operate in the military theater
P320-M17

The Army officially awarded Sig Sauer an $80 million firm-fixed contract in January 2017.

Impact on the Gun Industry 

If anything, this decision cemented the role of polymer frames within the gun industry for the foreseeable future.

Google saw a rather large spike in searches for "Sig Sauer" in January 2017 as a result. 

Sig Sauer searches
Searches for "Sig Sauer"

Anytime a U.S. military branch or alphabet agency makes changes to its standard-issue weaponry, the entire American citizenry perks up.

For example, once the FBI switched over to .45 ACP back in 1986, there was a corresponding spike in .45 ACP sales throughout the U.S.

The same happened in 2014 once the FBI switched back to 9mm. 

40 s&w
9mm vs .45 ACP

Polymer-framed handguns are here to stay, and the XM17 is a part of the reason why. 

Final Thoughts

Anytime the Army moves, people listen. The history of the Colt Single Action Army, 1911, M4, M9, and XM17 has proven such.

The Sig Sauer M17 does a lot of things well
The Sig Sauer M17 does a lot of things well

The switch to the XM17 was the first switch the Army has made in roughly 30 years, and it’s safe to say that the XM17 is going to be harbored from antiquity for quite some time now. 

What are your thoughts on the XM17? Let us know in the comments below! Can't get enough of military guns and gear? We got you! Check out some of our favorite articles on the topic!

Aden Tate

Written By
Aden Tate
Author

Aden Tate is a writer and locksmith in The Beautiful South. When he’s not hammering away at a keyboard, he can be found raising goats, pigs, bees, chickens, mushrooms, and crops.

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