The 5.8×21mm is a Chinese armor-piercing cartridge for handguns and submachine guns.

5.8×21mm DAP92
TypeHandgun, submachine gun
Place of originChina
Service history
Used byChina
Production history
Case typeRimless, Bottleneck[1]
Bullet diameter6.00 mm (0.236 in) [2]
Neck diameter6.57 mm (0.259 in)
Shoulder diameter7.77 mm (0.306 in)
Base diameter7.95 mm (0.313 in)
Rim diameter7.97 mm (0.314 in)
Rim thickness1.13 mm (0.044 in)
Case length21.00 mm (0.827 in)
Overall length32.50 mm (1.280 in)
Ballistic performance
Bullet mass/type Velocity Energy
46 gr (3 g) Armor Piercing 1574* 247 ft⋅lbf (335 J)
46 gr (3 g) Armor Piercing 1700** 310 ft⋅lbf (420 J)
Test barrel length: Pistol* and Submachine Gun**


The cartridge was designed for replacements of 7.62×25mm Tokarev-chambered small arms for the People's Liberation Army that would offer a wound as large as a standard 9×19mm Parabellum round.[3] This round is offered in both a standard, and subsonic version.[1] Both the QSZ-92 service pistol and the QCW-05 submachine gun are produced in this caliber as well as 9×19mm Parabellum.[4][5]

The 5.8×21mm is considerably less powerful than similar Western PDW cartridges like the 5.7×28mm and 4.6×30mm. It has a steel-cored 3 g (46 gr) projectile that has a muzzle velocity of 530 m/s (1,700 ft/s) and muzzle energy of 420 J (310 ft⋅lb) from a submachine gun barrel. The round can penetrate 1.3 mm (0.051 in) of helmet steel plate, and 50 mm (2.0 in) of pine wood behind it, out to 100 meters.[6]

See also


  1. "5.8x21 / MUNICION.ORG". Retrieved March 23, 2012.
  2. Handgunsmag.com. Retrieved 3 April 2013.
  3. Fortier, David M. (September 24, 2010). "Military Ammo Today". Guns & Ammo. Retrieved September 25, 2012.
  4. Popenker, Maxim. "Modern Firearms - QSZ-92 pistol". World Guns. Retrieved September 25, 2012.
  5. Popenker, Maxim. "Modern Firearms - Type 05 submachine gun". World Guns. Retrieved September 25, 2012.
  6. Where Next For PDWs? by Anthony G Williams Archived 2014-07-14 at the Wayback Machine

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