As one of the tried-and-true CIWS systems available, effectiveness against anti-ship missiles has been demonstrated over the years in exercises,[12] making it the staple anti-air weapon of most Soviet naval vessels.

Once operational, the system was rapidly adopted and installed in every new Soviet warship (from mine-hunters to aircraft carriers) with up to eight units on larger vessels; hundreds have been produced in total.

Features include surveillance and tracking modes, high jamming immunity, laser range finder and TV optical sight.

However, like all gun-based CIWS, they suffer from short engagement times and the need for multiple volleys to effectively eradicate a threat.

Externally, the air-cooled AK-306 can be distinguished from the AK-630 by the absence of the water cooling system (a cylindrical jacket that surrounds the barrel cluster of the AK-630).

[14] In 1983, a decision was made to update the design and modify the AK-630 system to include a second gun mounted above the first, which provides 10,000 rpm in total.

[citation needed] In July 2007 at IMDS-2007, a modernized version of the AK-630M1-2 called AK-630M2 with two AO-18KD rotary cannons was showcased by OAO AK Tulamashzavod under the new name "Duet".

The Kamand gun system is able to hit airborne targets at a range of two kilometres firing projectiles at a rate of 4,000 to 7,000 rounds per minute.