The bolt in the striker is different from the bolts for the Vsr. The Vsr has 2 bolts, one is electronic. In my opinion, the electronic bolt is better in the Vsr. If you want to spend money, buy that. It will work in the Ssg, little modification required for install. Nothing abnormal for a normal Vsr bolt install.
Converting an ssg10 to left handed is easy. Pretty sure not has the parts on his site.