Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: NR-30 wani ganga ne guda daya, mai gajeren lokaci, wanda aka yi amfani da shi, wanda ya kasance wani nau'i mai girma na 23 mm NR-23 da aka gabatar a shekarar 1949. Ya harbe wani babban harsashi (fiye da sau biyu nauyin NR-23 na 23 mm shell), yana buƙatar ƙuƙwalwar ƙuƙwalwa tare da haɗin wuta mai haɗawa don hana lalacewar jirgin sama daga harbi. Kafin wannan bindiga, kayan aikin jirgin saman Soviet na yau da kullun sun kasance bindigogi guda biyu na 23 mm da guda 37 mm, waɗanda suka bambanta sosai. 23 mm ya kasance mai ƙarfi sosai, amma tare da ƙananan saurin farawa, yayin da 37 mm ba ta da saurin wuta da ajiyar harsashi.  Tambaya: Wace irin birki yake bukata?
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