蝎式EVO 3 S1冲锋枪是CZ公司在蝎式EVO 3 A1冲锋枪(2012年推出)基础上研制的一款民用型半自动冲锋枪。该枪在原型枪基础上取消了枪托、增加了机匣尾盖,并且机匣尾部侧面的形状也有细微变化。机匣顶部的皮卡汀尼导轨上换装了新型机械瞄具,机械瞄具整体体积较大,两侧有护翼;护手下方增设了防止手指伸到枪管口部附近发生危险的挡块。快慢机取消了3发点射和连发功能,只能单发发射;由于单发发射枪弹消耗较慢,因此弹匣容弹量也由30发改成了20发,同时弹匣改为透明聚合物制成。该枪仍发射9mm巴拉贝鲁姆弹。 Scorpio EVO 3 S1 submachine gun is CZ’s Scorpio EVO 3 A1 submachine gun (introduced in 2012) based on the development of a civilian-type semi-automatic submachine gun. The gun in the prototype gun on the basis of canceling the gunstock, an increase of the end of the casing cover, and the rear side of the casing shape also subtle changes. The Picatinny rail at the top of the receiver is equipped with a new type of mechanical sighting aiming at the overall size of the mechanical sights and with flaps on both sides. Underneath the handguards is an additional stop to prevent dangerous finger sticking out of the barrel of the gun . Speed ​​machine canceled the 3-point firing and bursts of functions, only a single launch; as a single launcher bullets consumption is slower, so the magazine capacity bomb from 30 hair into 20 hair, at the same time the magazine to transparent polymerization Made of. The gun is still firing 9mm Balabroum shells.