Antitank-rifle L-39 was semiautomatic, while L-39/44 could fire also full-auto, but indeed even it had a slow rate of fire (practical maximum rate of fire 80 - 100 shots per minute). But they were still more effective against Soviet Il-2 ground attack aircraft, than shooting with rifle-caliber weapons or throwing rocks. Soviet Il-2 aircraft was pretty much immune to rifle-caliber bullets, so something bigger was needed. During the war they (L-39 and L-39/44) were not used by anti-aicraft gun units, but just normal infantry. Since Finnish infantry units didn't have anything better for this purpose, even 20-mm semiautomatic had to do. Actually downing enemy aircraft with L-39 or L-39/44 seems to have been very rare, but incoming 20-mm shells might have had some impact for keeping the Soviet pilots to stay bit further away.YAN wrote:I wonder if they were effective as a AA gun having such a slow rate of fire.
Jarkko