Are rock hard muscles and vascularity mostly genetic?

[Lovetogetjacked]

Are rock hard muscles and vascularity all based off of genetics? For example is it possible that a person could workout for years with a good diet and never get rock hard muscles or large size veins showing at a rested state? Just wondering how much a role genetics play when it comes to muscle firmness and how vascular a person becomes?

 

[Montego]

Vascularity - a lot

Muscle hardness - not much

 

[Lovetogetjacked]

Vascularity - a lot

Muscle hardness - not much

Montego, what rep range do you feel makes the defining factor if a person will firmer or softer? What has worked for you?