First period photo

[DoctorKingSchultz]

In 1860, there were none. Certainly not in the form of a rifle musket or musket. The lock was on the RIGHT, like it or not. If you had ever fired a flintlock, you would know why.
View attachment 486646

Percussion caps were better, but are not too good for the aiming eye when fired left-handed.

Well, they did make left handed versions of percussion rifles, though rare.

 

[Old Soldier]

Well, they did make left handed versions of percussion rifles, though rare.

Never an issue weapon. As I said - all RIGHT-handed - like it or not.