ACE3/optionals/compat_adr_97/CfgMagazines.hpp

class CfgMagazines {
    class CA_Magazine;
    class 50Rnd_570x28_SMG_03: CA_Magazine {
        displayName = CSTRING(P90_Mag_Name);
        descriptionShort = CSTRING(P90_Mag_DescriptionShort);
    };
};