FN's delayed-blowback pistol in 5.7x28mm, adopted by various NATO special operations forces with armor-piercing SS190 ammunition. Type: Pistol Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 20 Year introduced: 2000, Belgium Weight: 23 oz Overall length: 8.2" Status: Active Military use: Yes Intended use: military, law enforcement