The Type 77A1 () is a

submachine gun A submachine gun (SMG) is a magazine-fed, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an autom ...

of Taiwanese origin.

References

9mm Parabellum submachine guns Telescoping bolt submachine guns Firearms of the Republic of China Military equipment introduced in the 1980s {{Taiwan-mil-stub