30mm DS30M Mark 2 Automated Small Calibre Gun

DS30M
30mm DS30M Mark 2 fitted on NAM Atlântico
Type	Gun turret for autocannon with automated mount or manual control
Place of origin	United Kingdom
Service history
In service	2007–present
Used by	See operators
Production history
Designer	MSI-Defence Systems /Alliant Techsystems
Specifications
Barrel length	94.88 inches (2,410 mm)
Shell	30×173mm
Caliber	30 millimetres (1.18 in) caliber
Muzzle velocity	1,080 metres per second (3,500 ft/s) (HEI-T ammunition)
Effective firing range	5,100 metres (16,700 ft)

The 30mm DS30M Mark 2 is a ship-protection system made by MSI-Defence Systems consisting of a 30mm Mark 44 Bushmaster II cannon on an automated mount. It was designed to defend Royal Navy frigates from fast inshore attack craft armed with short-range missiles, rocket-propelled grenades, machine guns, or explosives.