Detailed Instructions: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Q: Context : The Automatgevar m/42 (Ag m/42, outside of Sweden commonly known as the AG42, AG-42 or Ljungman) is a Swedish semi-automatic rifle which saw limited use by the Swedish Army from 1942 until the 1960s.
Answer : 1942
A:
What was the year that Ag m/42 entered service?