Hi guys, thanks for all the comments, really appreciate them.
@Bengreen: recently i also bought vsr, what i can say is the overall inside body is much more complex than ca m24, and i'm planning to built the same stock with vsr base, so meanwhile i cannot give you any tips regarding vsr stock. Just make sure you fit the body with the barrel perfectly, and i saw in youtube once how to mold your stock to fit your barrel, using casting material and paper to cover your barrel , sadly i think the video has been removed. And the last thing probably don't rush your work, it take some serius time to sand off the stock. Good luck on your project.