Your 'M1925' (as referred to by today's collectors) was made pre WW2, as evidenced by trap door buttplate), after 1924 ('Made in Austria' on bridge), and before 1938 (not made in Germany).

If the receiver side stamping is Oesterr Waffenfabrik. Ges. Steyr its receiver was produced no later than 1926. If stamped Steyr Werke AG it dates between 1926 - 1938.

The proofs will tell the story from there.