Nsiro, you are a gifted man as 9,3x62 Mannlicher Schoenauer were never common; the best option in order to get the most appropriate answers to your questions would be for you to post photos of the rifle. In the meantime I will make some preliminary comments:
- Mannlicher Schoenauer are light rifles by design; my own M. 1924 in 9,3x62 weighs 3,450 kg with scope mounts.
- Spare parts are not easy to find however, as for Mauser rifles, it is very rare that one incurs breaks; cracks in the stock can be noticed by stripping the rifle.
- As there are no scope bases you should be able to identify your model from the markings on the front part of the action. If the rifle is a M. 1924 (the first model to be offered in 9,3x62) you should find "Made in Austria - Patent Mannlicher Schoenauer - Kal. 9,3x62", if it's a GK you should have "Made in Austria - Original Mannlicher Schoenauer - Mod. GK - Kal . 9,3x62"; you may also find the same markings as for the "GK" but with "Mod. 1950" (when production resumed after WW2) and all subsequent models also offered in 9,3x62.
Anyway congratulations on your find. Best regards. Louis