Ammunition in 30 mm 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 (CIWS), 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 chambered in 30 mm. The
U.S. military uses 30 mm weapons in their
A-10 Thunderbolt II ground-attack aircraft,
AC-130 gunship (AC-130J Ghostrider variant), and
AH-64 Apache attack helicopter. It was going to be used in the
Expeditionary Fighting Vehicle, until the project was canceled. The
United States Navy uses 30 mm weapons on the
San Antonio-class amphibious transport dock and on and as part of the surface warfare (SuW) package. In 2012, the Navy decided to replace the
Mk 110 57 mm cannons on with the Mk 46 GWS (Gun Weapon System), a navalized mounting of the
Mk44 Bushmaster chain gun. In 2022, the
United States Coast Guard announced plans to install 30 mm Mk44 chain guns on newly-built
Polar Security Cutters (PSCs), though existing cutters would retain their 25mm
Mark 38 mounts. ==Types of ammunition==