page_title: Mauser BK-27
section_title: Specifications
hierarchical_section_title: Mauser BK-27 / Specifications
context_page_description: The BK 27 is a 27 mm caliber revolver cannon manufactured by Mauser of Germany. It was developed in the late 1960s for the MRCA program that ultimately became the Panavia Tornado.
  The BK 27 is a gas-operated cannon firing a new series of 27×145 mm cartridges with a typical projectile weight of 260 g, and a total weight for the complete round of 516 g. Most models use a linked feed system for the ammunition; however, the Eurofighter Typhoon makes use of a specially developed variant of the BK 27 that uses a linkless feed system instead, which is intended to improve reliability.
context_section_description: Data from Jane's Information Group
  Type: single-barrel, five chamber revolver cannon
  Caliber: 27 mm × 145 (1.063 in)
  Operation: revolver
  Length: 2.31 m (7 ft 7 in)
  Weight (complete): 100 kg (220 lb)
  Rate of fire: 1,000-1,700 rpm selectable (+/− 100 rpm)
  Muzzle velocity: 1,100 m/s (3,600 ft/s)
  Muzzle energy: ~157,300 Joules
  Projectile weight: 260 g (9.2 oz)
caption: Helicopter-mounted Mauser BK-27
exif: {}