20 mm caliber is a specific size of popular autocannon ammunition. The dividing line between smaller-caliber weapons, commonly called "guns", from larger-caliber "cannons" (e.g. machine gun vs. autocannon), is conventionally taken to be the 20 mm round, the smallest caliber of …

The Oerlikon 20 mm cannon is a series of autocannons based on an original German Becker Type M2 20 mm cannon design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II.

The Anzio 20mm rifle[1] is an American anti-materiel rifle designed and marketed by Anzio Iron Works. It is the first American anti-materiel rifle designed and mass-produced for public sale with a bore diameter in excess of .50 caliber in over 80 years. [2] .

The 20mm caliber is a specific size of cannon or autocannon ammunition. There are few weapons (aside from shotguns and large game hunting rifles) which have been built that fire projectiles between .50 caliber (0.50 inches/12.7 mm, roughly 13 …

Rheinmetall continues to build on their legacy, developing and manufacturing automatic cannons featuring exceptional firepower, precision and reliability. Rheinmetall is proud to present its current family of medium-calibre cannons in the 20 mm to 35 mm calibre range.

2013年4月17日 · Back in 1918, German arms engineer Reinhold Becker came up with a 20x80mm round that fired using primer ignition blowback in a very large machine gun to fire at 300-rounds per minute. This gun...

Widely used by many nations, this 20 mm automatic weapon originally designed by the Swiss firm of Oerlikon was probably produced in higher numbers than any other AA weapon of World War II.

2024年2月18日 · The 20mm caliber is typically used in heavy weapons such as aircraft cannons, anti-aircraft guns, and naval artillery. Its high muzzle energy and velocity make it suitable for piercing heavily armored targets and delivering devastating firepower.

The 20 mm Oerlikon is the most widely used close-range gun in both the US Navy and Royal Navy, which had up to that point only developed inferior guns in comparison. In comparison with the Hispano Suiza, the Oerlikon had a lower rate of fire and muzzle velocity, but was despite these shortcomings an excellent weapons.

2020年6月16日 · Nicknamed “Norsupyssy,” Finnish for “elephant gun,” it had excellent accuracy, penetration, and range for its time but its size made transportation difficult. The L-39 was developed during the...