Oerlikon KBB autocannon showing double feed mechanism and multi-slotted muzzle brake.
Source: www.airwar.ru -
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The KBB is used in the Sea Zenith close-in weapon system. Four KBB are fitted in a single mount.
The KBA is a different 25mm autocannon in the Oerlikon lineup. It fires the 25x137mm NATO round. Whereas the KBB is rather uncommon, the KBA is used on a wide range of vehicles and ships.
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