Schritt 9 übersetzen
With blow back cylinder in position you can now add the black cylinder retainer piece. Just line it and slide on as shown. It helps to have a soft mallet if you are having difficulty.
Next you can add the gearbox retainer strap to the rear top section of the gearbox.
Have the larger hole at the back so you will have a easier time removing it for future gearbox maintenance or modification.