ADLER T-26 Italian version of the "Tanker Garand". Fires 30-06 rounds from a stripper clip. Today it's sold as a civilian weapon, although, immediately after the WW2, and until half 50s, this weapon and a "normal size" Garand were made by Beretta as the main long assault weapon for the Italian Army.
ADLER T-26
Picture and information courtesy of: PIERANGELO TENDAS