Unfortunately the Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount will not fit a Century Arms VSKA.
A standard AK model should be a more appropriate fit. Linked below is an example:
https://www.opticsplanet.com/midwest-industries-ak-47-74-generation-2-picatinny-rail-quick-detach-modular-ak.html
No, the Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount is designed to fit YUGO pattern rifles. You would need the model linked below:
https://www.opticsplanet.com/midwest-industries-ak-47-74-generation-2-picatinny-rail-quick-detach-modular-ak.html
It is recommended you confirm zero if you remove the optic and Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount then re-install it.
The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount is designed for Yugo pattern rifles and would not be compatible with your SAM 7. You would need the Midwest Industries AK 47/74 Generation 2 Picatinny Rail Quick Detach Modular AK Scope Mount, found by using the link below:
https://www.opticsplanet.com/midwest-industries-ak-47-74-generation-2-picatinny-rail-quick-detach-modular-ak.html
Yes, the new .308 M77 uses standard YUGO mounts and would be compatible with this Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount.
The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount is designed to mount to the side rail on AK47's and AK variants. The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount will not mount to a AK Master Mount.
The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount with the Mini Rail Mount will not fit a EOTech Transverse EXPS2-2A. There will not be enough rail space on the Mini Mount Model, so you would need to use the full length picatinny rail model of the Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount.
The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount uses the optics mounting slot on the side of AK47 receivers. So you should not have to remove your stock to mount the Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount.
The Midwest Industries AKG2 Yugo Pattern AK-47/ 74 Scope Mount with the short rail will not have enough room for the Holosun 510C.