Polish carbines: kbk wz. 91/98/23 (top) and kbk wz. 91/98/25 (bottom).
Created in Second Polish Republic by modifying Russian Mosin M1891 rifles, adapting them to 7.92×57mm Mauser cartridge.
<a href="//commons.wikimedia.org/wiki/User:Sumek101" title="User:Sumek101">Sumek101</a>
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<span class="int-own-work" lang="en">Own work</span>