20-mm GAI-C01 anti-aircraft gun

The GAI-C01 and GAI-C04 are two of the several 20-mm anti-aircraft guns built by the Swiss firm Oerlikon. The weapons are similar with the exception of the type of cannon used. The GAI-C01 is fitted with the KAD-B13-3 cannon, while the GAI-C04 uses the KAD-B14.

Both cannon are gas-operated; the KAD-B13-3 is a right-hand, single-feed weapon, while the KAD-B14 is a dual-feed weapon. The GAI-C01 uses a single 75-round magazine; the GAI-C04 uses two 75-round magazines mounted on...