The Bofors 57 mm m/54 (57 mm luftvärnsautomatkanon m/54 or 57 mm lvakan m/54) was a wheeled[3] automatic anti-aircraft gun for land based use produced by Bofors and developed from the similar Bofors 57 mm m/50 naval artillery gun. The gun was developed in the 1950s and fielded by both the Belgian and Swedish military.
The m/54 fired a 2.67 kg (5.9 lb) high explosive projectile at a muzzle velocity of 880 m/s (2,900 ft/s) and a rate of fire of 160 rounds per minute. Weighing in at 8.1 t (8.0 long tons; 8.9 short tons), the m/54 had an effective range of 4,000 m (13,000 ft).[4] The ballistics of the m/54 at practical air defense altitudes were not particularly superior to those of the Bofors 40 mm AA gun, resulting in relatively few sales of the m/54.[5]
↑Blunt, Brian; Hewish, Mark; Hogg, Ian V.; Taylor, Tolley (1981). Bidwell, Shelford; Buchanan-Brown, John (eds.). Brassey's Artillery of the World (2nd ed.). Oxford: Brassey's Publishers Ltd. p. 195. ISBN0-08-027035-2.
↑Pretty, R. T.; Archer, D. H. R., eds. (1974). Jane's Weapons Systems 1973-74 (5th ed.). London: Jane's Yearbooks. p. 415. ISBN0-354-00118-3.
