How NATO standardized the FN 5.7x28mm cartridge

Big Bad

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Had a bit of a time deciding where to put this, does not seem to fit the usual ammo thread stuff. But anyway here's a photo of a P90 (also, captioning for the ammo types and SS photos are at the link).

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How NATO standardized the FN 5.7x28mm cartridge


Miguel Ortiz

Posted On March 18, 2021 12:05:27

The FN 5.7x28mm cartridge is a bit of an oddity. Developed from the ground up by FN Herstal of Belgium, the round was designed for use in handguns and personal defense weapons. It is a small-caliber bottlenecked cartridge that bridges the gap between round-nosed pistol cartridges like the NATO 9x19mm Parabellum used in the M9 and intermediate rifle cartridges the NATO 5.56x45mm used in the M4. In February 2021, the 5.7x28mm caliber was recognized and standardized as a NATO caliber.

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How NATO standardized the FN 5.7x28mm cartridge

The current variants of the 5.7x28mm cartridge (FN Herstal)
In the late 1980s, body armor was becoming more sophisticated and common. Technological advances in ceramics and synthetic fibers made personal armor more lightweight and concealable. In order to defeat modern armor, FN Herstal began development of a small-caliber round for use in a PDW with better armor penetrating properties than traditional pistol calibers.


In 1990, FN Herstal introduced the 5.7x28mm cartridge along with the P90 personal defense weapon. The compact and sci-fi looking gun (see Stargate and Hunger Games) was designed around the new cartridge. When fired from the P90, the new bullet could pierce the standard NATO body armor at a range of 200m. A slightly shorter version of the round was developed for use in the FN Five-seven pistol which was introduced in 1998, and became the new ball variant standard. Other variants include a frangible round, a tracer round, and a sub-sonic round for use with a suppressor.

In 2002 and 2003, NATO conducted a series of tests to determine if the 5.7x28mm cartridge should be standardized and replace the 9x19mm cartridge. Despite finding that it was undoubtedly superior to the standard 9x19mm and the new Heckler & Koch 4.6x30mm cartridge used in the MP7, the panel rejected the round’s standardization. Although this slowed 5.7x28mm development, the cartridge and its associated weapons are currently used by military and law enforcement agencies in over 40 nations.

Secret Service using weapons with FN cartridges

Secret Service armed with P90s (U.S. Secret Service)

Perhaps one of the most notable users of the 5.7x28mm cartridge is the U.S. Secret Service. Both the P90 and the Five-seven are compact enough to be concealed and possess the armor-penetrating capabilities required for the high-profile protection missions that the agency undertakes. Other notable users include the U.S. Federal Protective Service, the Canadian JTF2 special forces group, and the French GIGN counter-terrorism group.


An arguably greater influence for the popularity of the round, at least in civilian circles, is video games and movies. As previously mentioned, the P90’s distinct sci-fi look lends itself to use in film. Its compact size also makes its easy for actors to manipulate on screen and a popular choice for Hollywood armorers. Video games like Counter-Strike and Call of Duty have featured both the P90 and Five-seven leading to increased interest in the real-life guns.

Because the 5.7x28mm has not been as extensively developed or adopted like the 5.56x45mm or 9x19mm cartridges, its availability and that of the weapons that shoot it on the civilian market remain low. Moreover, the cost of the round and its associated weapons is proportionally high. Still, the PS90 (the civilian version of the P90) and Five-seven can be found and purchased legally by civilians. Additionally, other manufacturers like Kel-Tec and Ruger have released their own guns chambered in the 5.7x28mm cartridge. With the round’s standardization by NATO, its popularity and prevalence is likely to grow in military, police, and civilian use.

How NATO standardized the FN 5.7x28mm cartridge

A Secret Service agent carries an FN P90 (U.S. Secret Service)




https://www.wearethemighty.com/mighty-tactical/how-nato-standardized-the-fn-5-7x28mm-cartridge/?utm_source=social&utm_medium=organic%20facebook&utm_campaign=traffic&fbclid=IwAR3n3gSfxG6A9Ut5lePX7vpVaEoHa1Hq69jvmlTIdCZWVB4tAD3MotGLeSM
 
IIRC, Joint Task Force 2 used the 5.7X28 for a period of time, but abandoned it due to it’s observed, underwhelming ‘terminal effects’.
 
IIRC, Joint Task Force 2 used the 5.7X28 for a period of time, but abandoned it due to it’s observed, underwhelming ‘terminal effects’.

And yet the US Secret Service continues to use the 5.7x28 for their Presidential Close Protection Force. The P90 has been adopted by more than 90 different national military or police forces. It won't be going away any time soon.
 
And yet the US Secret Service continues to use the 5.7x28 for their Presidential Close Protection Force. The P90 has been adopted by more than 90 different national military or police forces. It won't be going away any time soon.

I remember something about the Secret Service preferring the 5.7x28 round because it tends not to pass through the body and endanger anything beyond. That would be an asset in many non-military situations of course.
 
I remember something about the Secret Service preferring the 5.7x28 round because it tends not to pass through the body and endanger anything beyond. That would be an asset in many non-military situations of course.

I read the 5.7 ammo available to civilian market isn’t what the governments are using. It gets tamed down before we can get our lethal hands on it. lol.
 
I read the 5.7 ammo available to civilian market isn’t what the governments are using. It gets tamed down before we can get our lethal hands on it. lol.

We get the heavy bullet/low velocity ammunition which is not designed to defeat body armor.

If it were not for a quantum leap in body armor 40 years ago, both FN P90 and HK MP7 would have never existed and the 9mm HK MP5 and Uzi would be chugging along.

5.7 cartridge is hot 22 WMR equivalent while 4.6 is 17 HMR equivalent. High velocity cartridges optimized for 8-10” barrel length.

I’ve only shot the HK MP and it’s an awesome 17 HMR equivalent bullet hose!
 
Funny part is the Swiss Army tested both cartridge's to put an end to the bickering between FN and HK. The Swiss Army is a very highly respected center for excellence in testing and evaluating small arms and ammo in Europe. Many agencies, Federal, State and City will directly rely on their testing and stamp of approval.....

They tested and determined that the 5.7 x 28 was a superior round.....of course the Germans lost their minds and refused to accept the findings. Now that NATO has standardized the 5.7 x 28 I wish the Germans would swallow their pride and just chamber the MP7 in 5.7 x28.....or offer it in 5.7 x 28 and 4.6 x 30.

Lots of dudes sounding off about the lack of stopping power in these rounds. They are not designed to replace combat rifles, they are PDW's for support troops they will punch all soft armor. I think they do have a place. Some shootings, unfortunately like Fort Hood, demonstrated that the round maybe works a bit better than some claimed.

Rich
 
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