The Scorpion Evo 3 is a blowback operated carbine evolved from a Slovak prototype submachine gun called the Laugo. Chambered in 9×19mm Parabellum, the Scorpion EVO 3 is mostly polymer making it a lightweight, compact submachine gun designed to be easily maneuvered in confined spaces. The A1 variant features a left side charging handle with the option of a right side, along with an ambidextrous select fire switch, giving the operator the choice of "safe", semi-automatic, three-round burst, or fully automatic fire, while the S1's switch only features "safe" and semi-automatic fire. The standard version comes equipped with a folding, adjustable and fully removable stock for easy transport. The hand guard is lined with multiple Picatinny rails for the addition of attachments such as grips, sights, flashlights, and lasers. The hand guard on the American semi-automatic offering features M-LOK attachment points, with a single Picatinny rail on top.