The earliest models have much simple construction and crude appearance. The so-called "automatic" handgun models only make use of gunpowder for ignition. The shell ejection and loading of cartridge action requires manually pulling the slide. In 1962, MGC improved the operation with the invention of Tanio Action or Slide Action mechanism which enable cycling the slide backward and forward to eject and load the cartridge with a pull of trigger. The system was also adopted by other modelgun makers in various models in many years. Of course, the construction and operation of these early stage modelguns are not comparable to the real guns. In 1968, MGC developed the breakthrough cap blowback technology which imitate the automated operation more closely with their real automatic counterparts.