CY Wang does a review of the Arcturus PP19-01 AEG, which is modeled after the Russian-made Vityaz-SN submachine gun. He highlights its features, noting pros like a quick spring change system, switchable magazine capacity, and steel components. Cons include a less secure folding stock, limited stock compatibility, a small battery compartment, and the absence of an electronic trigger in early models. Performance tests showed some velocity inconsistencies, but the gun could hit targets at 60 meters but recommends it for field use.