40mm Bofors antiaircraft gun model 1930
40mm Bofors antiaircraft gun model 1930.
Overall length5200mm
Barrel length2280mm
Vertical field of fire-5°/+90°
Horizontal field of fire360°
Recoil length200-250mm
Weight in action2150kg
Weight of barrel103kg
Weight of breach and mechanism195kg
Weight of HE shell0.95kg
Muzzle velocity850m/s
Theoretical rate of fire120 rounds/minute
Practical rate of fire90 rounds/minute
Magazine capacity8 rounds
Max horizontal range12000m
Max vertical range3000m
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Dénes Bernád  (1 April 2007)
The Hungarians also built this cannon under licence. Here are the technical specs.:

DESCRIPTION:	light antiaircraft and antitank cannon

SHORT HISTORY:   the 4.0 cm Bofors antiaircraft guns were widely licensed and used during the Second World War (US Navy, Soviet Army, British Army), as they were probably the best in their category. Hungary bought the license in 1936, and MAVÁG manufactured them until 1945. The gun was used both as a towed antiaircraft piece, and in self-propelled Nimróds as both antitank and antiaircraft.

Manufacturer:		DIMÁVAG
Manufacturer's designation:	4.0 cm Bofors Model 36	
Years of production:		1938-1945
Honvédség's designation:	36 M könnyü légvédelmi ágyú
Number in inventory:		534+363+135 for Nimróds (1938-1944)
Caliber:		40.0 mm
Length of the barrel:		2,250 mm
Muzzle velocity:		850 m/sec 
Range - horizontal:		7,000 m		
Range – vertical:		3,000 m		
Elevation:		-5o, +85o
Traverse:		360o	

Weight of the gun:		2,100 kg 
Weight of the projectile:		0.95 kg (HE)
Rate of fire:		120 rounds/min. 
Magazine:		straight, 8 rounds 

Towing mode:		light trucks 

Note:   Could fire also armor-piercing rounds, and so could be used against ground targets. Very modern construction, excellent properties, light. In 1944, 42/a M armour piercing stick grenades used for anti-tank role (9.2 kg total weigh, 2.6 kg explosive charge, muzzle velocity 105 m/s, max. range 700 m, effective range 200 m, capable to penetrate 160-180 mm armor).
Orders placed: 112+186+16+64+17+215+450=1084 pcs. (of this number 150 were for German export. Of this, 60 pcs. were returned by the Germans for defense of Transylvania in Sept. 1944).

Dénes Bernád  (1 April 2007)
AFAIK, the manufacturer's designation was 4.0 cm Bofors Light Antiaircraft Cannon, Model 36.

Wesley Thomas  (16 March 2007)
It is difficult to imagine this weapon being designated "M-1930" in Romanian service as the first land service Bofors guns did not go into service until 1934-1935 (the M-1934 [Bofor's own designation] was the first of the land service Bofors guns built after the Dutch Navy took delivery of some naval mounts in 1932).