There were two types of Berdan rifles.
Berdan I was a lifting-block rifle with a striker mechanism. Colt made 15,000, along with the "Gorloff" machine-gun (Gatling with a Russian-language plaque). The Berdan I was not produced in Russia. Closest thing you will find to it in this country will be that little Deutsche-Werke .22, the one they call the "hoodlift"... which happens to be very accurate with low-pressure ammo.
Berdan II was a bolt-action singleshot using the same .42 ammunition. It locked-up like a '71 Mauser, from which it was more-or-less copied. My old boss (SS Oberscharfuhrer) once told me they encountered some in Russia in '41/'42. They were built at Tula and possibly other plants, being the standard rifle from about 1872 to 1891.
Neither one is exactly common in this part of the world.
Wonder where I can buy a LAMP these days?
Hope this helps.
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