The AK-100 is a Soviet 100mm naval cannon, with a maximum rate of fire of 60 rounds per minute, firing a 26.8 kilograms (59 lb) munition in HE anti-air or HE fragmentation varieties.

[1][2] The A190, also known as AK-190 and A-190,[5] is a modernized lightweight version of AK-100 developed by Burevestnik Central Scientific Research Institute that first entered service in 1997.

[5] Deliveries started to the RF Navy to replace the AK-176 gun mount in 2012 and more than 30 systems with a firing range of more than 20 km were delivered as of 2020.

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