SMG's

" A submachine gun (SMG) is a magazine-fed, automatic carbine designed to shoot handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun." - https://en.wikipedia.org/wiki/Submachine_gun

In SAS4, SMGs have been shown to step to a futuristic technology as for not only the overall design but also the performance such as larger capacity, special damage dealing,....