Whether you can shoot a right handed rifle as a left handed person or not isn't the issue. Most all long guns today for a right handed persons are designed to expel their gases and garbage(in case of a catastrophic failure)out the right hand side as to keep that big gaping hole and all that other dangerous stuff as far away from the face of the right handed shooters as possible, and with guns specifically designed for left handed shooters the same is true. If you are a lefty and can find what you want/need in a left handed model, you're a fool not to get it.
Just face shoot the criminal was the advice I was given. Old tech new tech, face shooting will nearly always take the wrong doing out of a bad guy.