What was likely to cause the jamming in a viewer's Sten?
Short answerA bad spring is suggested as the likely cause, with reliability dependent on spring quality.
NotesA viewer reports five stoppages while firing twelve magazines through a Sten. A bad spring is suggested as the likely cause, with spring quality central to the explanation. The later repetition changes the reported denominator to rounds, so it should not be read as a reliable numerical failure rate. The exchange concerns the probable cause of that reported experience, rather than a diagnosis supported by inspection of the weapon.