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5.7×28mm
Country of origin

Belgium

Manufacturers

FN Herstal

Designer

Jean-Paul Denis (SS90)
Marc Neuforge (SS90)

Year(s) designed

1986-1990 (SS90)
1992-1993 (SS190)

Cartridge type

Rimless; bottlenecked

Overall length

40.50mm (SS190)

Case length

28.84mm

Neck diameter

6.45mm

Shoulder diameter

7.87mm

Base diameter

7.9mm

Rim diameter

7.79mm

Rim thickness

1.05mm

Rifling twist

1:9 inch

Muzzle velocity

716 m/s (SS190, SS195LF)

Primer type

Boxer small rifle

Used by

Argentina
Austria
Bangladesh
Belgium
Bosnia and Herzegovina
Brazil
Canada
Chile
Colombia
Cyprus
Czech Republic
Dominican Republic
El Salvador
Egypt
France
Germany
Georgia
Greece
Guatemala
India
Indonesia
Ireland
Italy
Jordan
Kuwait
Lebanon
Libya
Luxembourg
Malaysia
Mauritania
Mauritius
Mexico
Morocco
Netherlands
Nigeria
Oman
Pakistan
Panama
Papua New Guinea
Peru
Philippines
Poland
Portugal
Romania
Saudi Arabia
Singapore
South Korea
Spain
Suriname
Republic of China
Thailand
Trinidad and Tobago
Turkey
Ukraine
United Kingdom
United States
Venezuela

The 5.7×28mm is a small arms cartridge developed by FN Herstal for the P90 PDW and the Five-seveN semi automatic pistol.

Design Details

The 5.7×28mm cartridge is designed like a small rifle cartridge; the casing has a small neck to accommodate the projectile, which is a 31 grain bullet. In its original configuration, the bullet has a steel core for penetrating soft body armor. The projectile design was modified to FMJ in order to be sold on the commercial market.

Feed Systems

This cartridge is fed through detachable box magazines.

Variations

  • SS90 Type I - Original version of the round featuring a steel-cored projectile that measures 23.26mm.
  • SS90 Type II - Redesign of the SS90 with an aluminum-cored projectile measuring 24.10mm
  • SS190 - Replacing the SS90 in 1993, the SS190 uses a shorter projectile, allowing it to be used in pistols such as the FN Five-seveN. A version of the P90 using this round was introduced alongside it.
  • L191 - Tracer round.
  • SB193 - Subsonic round. Formerly designated SS193
  • SS192 - Civilian-use hollow point round introduced alongside the IOM version of the Five-seveN pistol. It was discontinued the same year that it was introduced.
  • SS195LF - Civilian-use hollow round with lead-free primer
  • SS196SR - Civilian-use sporting round using the Hornady V-Max projectile
  • T194 - Training round
  • SS197SR - Civilian-use sporting round using the Hornady V-Max projectile. Manufactured by Fiocchi under contract for FN Herstal, and has a muzzle velocity that is 30 m/s higher.
  • SS198LF - Uses the same lead-free projectile and primer as the SS195LF, but propels it at roughly a 30-m/s (100 ft/s) higher muzzle velocity. It has a green painted tip, and its sale is currently restricted by FN to military and law enforcement customers.

Developmental Variations

Gallery

References

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