Some more info based on the comments made.

It does have the straight butter knife bolt handle with no back tilt. There is the bolt stop spring where required.

The front and rear sights are correct.

It has the inscription:

"Oesterr Waffenfabr-Ges. Steyr" on the top receiver left side as expected.

I suspect it is a commercial rifle.

Again - I measure bbls by placing a cleaning rod down the bbl until it hits the face of the closed bolt and measure to the muzzle. I do not know if this is the way that they were measured in 1903 or 1929.

Thanks to Longisland for the nfo that it did come with DS or single triggers