What is the smallest anti-aircraft gun?

20 millimeter guns
The 20 millimeter guns were the smallest anti-aircraft guns carried aboard the SLATER. As heavy machine guns, they were capable of firing 450 rounds per minute per barrel with an approximate range of 2000 yards. Each gun was manned by a crew of 4; a gunner, sight(range) setter, one loader per barrel.

What size are anti-aircraft guns?

Against dive-bombers and low-level attack aircraft, a 40-millimetre (1.5-inch) gun, first produced by the Bofors firm of Sweden, was widely used by the British and U.S. forces. It fired 2-pound (0.9-kilogram) projectiles to a height of 2 miles (3.2 km) at 120 rounds per minute.

Can you own a 20mm gun?

They’re legal to own in the US.

What happened to the 20mm AA gun after WW2?

The Swiss Oerlikon company continued to sell 20mm AA guns after WWII. The Swiss Army used 20mm AA guns until the late 1990s and then replaced them with the Stinger handheld anti-aircraft missile. WWII British Army MOUNTING, UNIVERSAL, 20 MM. GUN, Mk.

What is the size of a 20mm anti tank rifle?

A small number of anti-tank rifles were produced in 20 mm and larger calibers. 20 mm cartridges have an outside bullet diameter and inside barrel diameter of 0.787 inches (20.0 mm). Projectiles or bullets are typically 75 to 127 mm (3–5 in) long. Cartridge cases are typically 75 to 152 mm (3–6 in) long.

What is a 20mm autocannon?

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.

What is a 20mm caliber?

The 20 mm caliber is a common firearm bore diameter, typically used to distinguish smaller-caliber weapons, commonly called ” guns “, from larger-caliber ” cannons ” (e.g. machine gun vs. autocannon ). All 20 mm cartridges have an outside projectile ( bullet) diameter and barrel bore diameter of 0.787 inches (20.0 mm).