30 mm caliber is a specific size of popular autocannon ammunition. Such ammunition includes NATO standard 30×113mmB and 30×173mm (STANAG 4624), Soviet 30×155mmB, 30×165mm, and 30×210mmB, Yugoslav 30×192mm, Anglo-Swiss 30×170mm, and Czechoslovak 30×210mm rounds which are widely used around the world. Usage Thirty-millimeter ammunition is typically not used against personnel, but rather as an anti-materiel or armor-piercing round. Rounds of this size can be effective against lightly armored vehicles as well as fortified bunkers. It is also a popular caliber for shipboard close-in weapons systems, such as the Russian AK-630 and Dutch Goalkeeper CIWS. The Armed Forces of the Russian Federation use their 30 mm weapons in a variety of vehicles, including the Su-25 attack aircraft, Mi-24 helicopter, Mi-28 attack helicopter, Ka-50 attack helicopter, and the BMP-2, BMP-3, and BTR-90 infantry fighting vehicles. The most modern anti-aircraft gun systems in use by Russia are 30 mm. The U.S. military uses 30 mm weapons in their A-10 Thunderbolt II ground-attack aircraft , AC-130 gunship (AC-130W Stinger II and AC-130J Ghostrider variants), and AH-64 Apache attack helicopter. It was going to be used in the Expeditionary Fighting Vehicle until the project was canceled. Types of 30 mm ammunition Thirty-millimeter ammunition generally comes in three varieties: armor-piercing (AP), high-explosive (HE), and target practice (TP) rounds. Both AP and HE cartridges commonly possess incendiary or tracer characteristics. Examples of weapons using 30 mm ammunition Historical weapons Current weapons See also 20 mm caliber 23 mm caliber 23×115mm 23×152mmB 25×137mm 35 mm caliber 37 mm caliber 40 mm grenade List of cartridges (weaponry), pistol and rifle References External links FAS: 30 mm Ammunition ATK Products: M230 ATK Products: M230LF Large-caliber cartridges