Assertion: submachine gun | /r/HasProperty | first submachine gun
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Source sentences:
text: Though technically not the world's first submachine gun, being beaten by the double-barreled Italian Villar-Perosa of 1915, in modern usage of the term the MP 18 is considered the world's first submachine gun since the Villar Perosa had been designed to be used as a light machine gun on aircraft before it was adapted to infantry use as a single-barreled shoulder-fired weapon in late 1918.
text: Though technically not the world's first submachine gun, being beaten by the double-barreled Italian Villar-Perosa of 1915, in modern usage of the term the MP 18 is considered the world's first submachine gun since the Villar Perosa had been designed to be used as a light machine gun on aircraft before it was adapted to infantry use as a single-barreled shoulder-fired weapon in late 1918.