Descendants of the World War I Villa-Perosa SMG, the variants of the M38 earned a reputation as well made, potent close-quarters weapon, strongly associated with hard-fighting units like the "Blackshirt" infantry assault forces and the paratroopers. The 38/42 was a model streamlined for military production, with a shorter stock, simplified muzzle brake, and no provision for a dust cover for the magazine well. Blade front and two-leaf rear sights, with a 2-vent brake at the muzzle, deeply fluted barrel, and "CAL9" and "CR/3326" markings on the receiver. The mechanism is fitted with dual triggers, the front with a disconnector for semi-automatic fire, the rear for full automatic, and a two-position safety switch is installed on the left side. The smooth pistol grip stock is stamped "4/UT/44" on the left side, with a brown leather sling and a steel buttplate.